This was CNBC's live blog tracking developments on the war in Ukraine.

Russian President Vladimir Putin heaped praise on his Chinese counterpart Xi Jinping at the start of a two-day state visit to China.

After the two leaders and their delegations held around 45 minutes of talks, Putin said at a press conference that discussions had been "warm and comradely" and had shown the importance of the relationship. He said both countries were working for a "multipolar world" and that many of their approaches to global or regional problems were similar.

Putin thanked China for its efforts in trying to solve the Ukraine "crisis" and said he would brief Xi on the battlefield situation.

Russia on Thursday said its offensive is "underway in all directions and is going quite well," while Ukraine's military said it was continuing to push back against Moscow's troops in northeast Ukraine.

IMF to launch new Ukraine mission to review loan, latest economic developments

The International Monetary Fund will start a new Ukraine mission in coming weeks to assess the war-torn country's economy and performance under a $15.6 billion loan program, IMF spokesperson Julie Kozack said on Thursday.

Kozack told a regular press briefing that the mission on the next loan program review will assess the latest economic developments in Ukraine and revise its macroeconomic framework and analysis of the country's debt sustainability.

— Reuters

'Brothers forever': Putin says Russia-China relations are at highest level in history

Russian President Vladimir Putin on Thursday described Russian and Chinese people as "brothers forever," in a speech before a concert in Beijing marking 75 years of diplomatic relations between the countries.

Putin said Russia-China relations were at their "highest level in history" with the "character of genuine comprehensive partnership and strategic interaction," according to an English transcript published by the Russian presidential office.

"A well-known song of that time, 75 years ago, is often performed today. It has a sentence that has become a catch phrase – "Russian and Chinese are brothers forever." I am confident that we will continue strengthening harmonious Russia-China partnership in this fraternal spirit," Putin said.

The countries have repeatedly emphasized their friendly relations and so-called "no limits partnership," with Beijing embroiled in trade disputes and Moscow largely alienated by the west.

— Jenni Reid

Denmark to send Ukraine $815 million aid package focused on air defense

Denmark's Foreign Ministry said Thursday it would send a new donation package to Ukraine worth 5.6 billion Danish kroner ($815 million), with just under half set aside for air defenses.

The package will help fund an upcoming donation of F-16 fighter jets, additional air defenses, the maintenance of artillery pieces and the donation of additional artillery pieces, shells and anti-tank mines, the ministry said.

Danish Defense Minister Troels Lund Poulsen said the country had earmarked an additional 1 billion kroner for purchasing defense equipment from Ukrainian companies, which would be donated immediately.

"Here, Denmark leads the way as the first country. It makes sense to produce the weapons where they will be used," Poulsen said in a Google-translated post via social media platform X.

— Jenni Reid

Zelenskyy meets military leaders in Kharkiv as Russian offensive advances

Ukrainian President Volodymyr Zelenskyy has travelled to Kharkiv in northeast Ukraine, where he was briefed on the battlefield situation as Russia's new offensive makes progress.

Zelenskyy said on Telegram that he had met with Ukraine's army chief Oleksandr Syrskyi and with other military officials to discuss the "operational situation, tasks and needs of each involved brigade, each unit, in particular in the Kharkiv Region, in the Vovchansk and Lyptsi districts," according to a NBC News translation.

Both areas are seen as hotspots in the war, with Russian forces occupying parts of Vovchansk and on the brink of seizing Lyptsi, according to Russian officials.

Ukraine's military said earlier on Thursday that it was slowing Russia's advance and that its units "continue to carry out combat missions within the Vovchansk urban development in the northern part of the city, keeping the enemy under fire control."

CNBC was unable to verify the battlefield assessments.

In his latest update, Zelenskyy conceded that the situation in the Kharkiv region "remains extremely difficult," but that it was "generally under control." He added that Ukraine was "strengthening our units."

Ukraine's current combat situation, forthcoming threats and "Ukrainian opportunities to counter Russian offensive plans" were also discussed, Zelenskyy said.

In a subsequent post, the Ukrainian leader said he had also visited soldiers who were wounded fighting in Kharkiv.

— Holly Ellyatt

China and Russia's relationship is not so one-sided, analyst says

Russia is frequently seen as the junior partner when it comes to its partnership with China and Russian President Vladimir Putin's latest trip to Beijing was seen as a way for Moscow to try to extract more economic and geopolitical support from China as it pursues its war in Ukraine. Analysts are keen to stress that the relationship is not all one-sided, however.

Anna Rosenberg, head of Geopolitics at Amundi, told CNBC there might soon come a time when China needs Russia.

"We are seeing that the sanctions that the West has imposed on [Russia] will continue to make the war effort more difficult if we look ahead to the future, so what Russia really needs from China is alternative partners and alternative ways to circumvent sanctions, as well as an alternative partner to say to the Global South, 'Look, we actually have friends in the world, we're not isolated,'" Rosenberg told CNBC Thursday.

"But when you see the direction of travel — of U.S. sanctions against China, which are likely going to increase with more trade friction and export controls under whatever new U.S. administration we have, China will also need friends — that's why they are also depending on the Russia relationship," she said.

— Holly Ellyatt

Kyiv dragging U.S. and Europe into a big war, Putin ally says

The speaker of Russia's lower house of parliament, the Duma, accused Ukraine of dragging the U.S. and Europe into a wider war with Russia because it was "losing on the battlefield."

"The Kyiv regime is dragging the United States and European countries into a big war," Vyacheslav Volodin claimed on Telegram Thursday.

"Ukrainian Rada [parliament] MPs are trying to convince Washington to allow U.S.-supplied weapons to hit targets on Russian territory. This path leads to a tragedy that could affect the entire humankind," he commented.

There has been an ongoing debate between Ukraine and its allies over whether long-range missiles can be used to attack Russia within its own territory.

The U.K. has given Ukraine the greenlight to use long-range "Storm Shadow" missiles to hit targets within Russia, but the U.S. has been more cautious about any similar use of its ATACMS missiles, fearing a deepening of tensions and retaliation. During U.S. Secretary of State Antony Blinken's trip to Kyiv this week, however, he signaled a shift in that stance, saying it was up to Kyiv to decide how to use U.S.-made weapons.

Volodin, a close ally of President Vladimir Putin, said "any use of American and European weapons to attack Russian peaceful cities will demand that we use more powerful weapons to protect the citizens of our country."

"Western politicians need to realize their responsibility and do everything to not turn the situation into a catastrophe on a global scale," he said.

Ukraine's Western allies say they are providing Kyiv with the means to defend its territory and sovereignty against Russia's unprovoked aggression and illegal invasion launched in February 2022.

— Holly Ellyatt

Ukrainian forces trying to slow Russian advance in northeast

Ukraine's military said its forces were working hard to slow Russian troops' advances in northeast Ukraine as a new offensive continues to bear fruit for Russia.

In an operational update on Facebook, Ukraine's General Staff said its defense forces were preventing Russian units from "moving deep into our territory" and had "forced decisive actions to significantly reduce the activity of Russian occupiers" since Russia launched a new offensive in Kharkiv, northeast Ukraine last Friday.

Russian forces continued their attempt to seize the border town of Vovchansk, Ukraine said, adding that its units "continue to carry out combat missions within the Vovchansk urban development in the northern part of the city, keeping the enemy under fire control."

"Actions are ongoing, the situation is under control," it added.

The fate of Vovchansk is uncertain; on Tuesday, a Russian official claimed Russian forces had control over the western and northern parts of the town. But Ukraine's military appeared to contradict the summary, stating that the situation in Vovchansk was "under control." On Tuesday, however, it said that it had withdrawn troops in some areas around Lukyantsi and Vovchansk in order to avoid losses.

Vovchansk's local police chief said Wednesday that Russian forces were establishing positions inside the town, saying "the situation is extremely difficult. The enemy is taking positions on the streets of the town of Vovchansk." CNBC was unable to immediately verify the battlefield reports.

— Holly Ellyatt

Kremlin says even China could not make Swiss peace summit more effective

The Kremlin repeated its stance that a peace summit set to be held in Switzerland in June is useless without Russia's participation, and said that even if China does participate in the event, it won't make it more effective.

"It is unlikely that this conference itself, from our point of view, can be regarded as some kind of serious attempt to find ways to a settlement," Kremlin Press Secretary Dmitry Peskov told the Izvestia newspaper Thursday.

Switzerland's President Viola Amherd said Wednesday that delegations from more than 50 countries will be attending the peace summit it's holding on June 15-16, although she said Switzerland wants to persuade more countries from the so-called "Global South," as well as China, to sign up.

Beijing has appeared to be lukewarm about the conference, however, saying it should include Russia. China has already proposed a 12-point peace plan that got a muted reception in the West and was accused of lacking a tangible plan to end the war.

Although Moscow has not been invited to the latest summit, having repeatedly signaled it would not attend in any case, Switzerland has said Russia must be involved in the peace process.

When asked about Beijing's potential participation in the conference, Peskov said "China's balanced approach can only ennoble any conference, from our point of view, but this will not add to the effectiveness of this particular event."

— Holly Ellyatt

Russia and China's relationship is more complicated than meets the eye, analysts say

Russia's relationship with superpower China is in the spotlight as President Vladimir Putin meets his Chinese counterpart Xi Jinping in Beijing.

Both countries' ties with the West have become increasingly tense while their own alliance has seemed to blossom.

Analysts say the relationship is complicated, however, with interests and needs that bring them together, such as trade and investment and a shared animosity toward the West, and others that keep them further apart, like Russia's unpredictability on the global stage and the ongoing invasion of Ukraine.

Like it or not, Russia and China's relationship is "inescapable," Sam Greene, director of the Democratic Resilience Program at the Center for European Policy Analysis (CEPA), told CNBC.

"It would be probably too much to call them strategic partners, but they are strategically aligned in a lot of respects, maybe not entirely within their own making and maybe not entirely to their own liking, but inevitably as a result of decisions they've made and decisions that Western governments have made that really have pushed them together," Greene said Wednesday.

"Neither Putin nor Xi can achieve what they want to achieve, both domestically and internationally, without the support of the other. Having said that, it's not symmetrical and China has many, many more options and much, much more flexibility than Russia does," he added.

Read more on the story here

— Holly Ellyatt

Putin heaps praise on Xi, China at start of state visit

Russian President Vladimir Putin heaped praise on his Chinese counterpart Xi Jinping during a two-day state visit to China.

After the two leaders and their delegations held around 45 minutes of talks, Putin said at a press conference that discussions had been "warm and comradely" and had shown the importance of the relationship, in comments reported by Reuters.

He said it was "logical" that his first foreign trip after being re-elected to a fifth term in office was to China, Russia's most important ally globally.

Putin thanked Xi for the warm welcome at the start of the trip. Earlier, the leaders had held talks in which Putin said they had discussed trade and investment, deepening energy cooperation and the thorny subject of Ukraine.

Putin said Russia was grateful to China for trying to solve what Beijing describes as the Ukraine "crisis," and said he would brief Xi on the situation in Ukraine where Russian forces have been making daily gains during a new offensive in the northeast.

The leaders earlier signed a joint statement on deepening their "strategic partnership of cooperation for a new era," Chinese state media agency Xinhua said. Other Russian and Chinese officials are reportedly set to sign 10 other documents, though it's uncertain what those likely bilateral agreements pertain to.

— Holly Ellyatt

Russian forces advancing in all directions in Ukraine, Shoigu says

Sergei Shoigu, the new secretary of Russia's Security Council, said Russian forces are advancing in all directions in Ukraine.

"As the Supreme Commander-in-Chief [Vladimir Putin] said, this is visible and obvious, the offensive is underway in all directions and is going quite well," Shoigu said in an interview with VGTRK journalist Pavel Zarubin, reported by RIA Novosti.

Russia's Defense Ministry said Wednesday that its forces had taken control of two more settlements in Ukraine's Kharkiv region, building on daily gains in the northeast as a new offensive builds momentum.

Shoigu spoke to pro-Kremlin journalist Zarubin on Thursday as part of Russia's delegation to China, where Russian President Vladimir Putin is making a two-day state visit. Former Defense Minister Shoigu is part of the delegation to Beijing that also includes Foreign Minister Sergei Lavrov, new Defense Minister Andrei Belousov, Finance Minister Anton Siluanov and Central Bank head Elvira Nabiullina.

Shoigu was replaced by Belousov following a government reshuffle by President Vladimir Putin last week. The move to the Security Council was seen as a demotion. Shoigu said Thursday that his main focus in his new role remains the "special military operation."

"It's difficult to single out any [one task], but the main task remains a special military operation - the production of ammunition, weapons and military equipment. I think that for all of us this is the main task," he commented.

— Holly Ellyatt

Estonia approves use of frozen Russian assets for Ukraine reparations

The Estonian parliament on Wednesday passed an act enabling Russian-owned assets which have been frozen under international sanctions to be used to compensate Ukraine for war damages.

In a statement, Estonia's Constitutional Committee said the country could take a pioneering role in creating a legal framework for the use of such assets for reparations.

Under the act, a foreign state that has sustained damage which has been proven by international law — such as Ukraine — could submit a compensation claim in Estonia.

Conditions on the use of assets as an "advance payment for compensation for damage" would then be agreed with the state making the claim. The link between the owner of the assets to the illegal acts would have to be proven.

"Russia is an aggressor state, and the burden of compensating the war damage caused by it cannot be left to Ukraine and its allies. Russia is responsible for causing the damages and must bear that responsibility," said Hendrik Johannes Terras, chair of Estonia's Constitutional Committee.

"Estonia is proposing a mechanism that provides for the liability of the people and companies directly involved in or contributing to the aggression," Terras added.

It comes after European Union ambassadors last week struck an agreement over using the profits from frozen Russian assets to support Ukraine. Details have not yet been released and the law has not been approved by EU leaders.

U.S. Secretary of State Antony Blinken on Tuesday said Washington has the power to seize Russian assets in the U.S. to use them to help rebuild Ukraine, and that it plans to do so.

— Jenni Reid

Russian defense spending could reach 8.7% of its GDP, Putin says

Russia's defense and security spending could total as much as 8.7% or more of its gross domestic product this year, President Vladimir Putin said Wednesday in a meeting with military commanders, state media agency RIA Novosti reported.

"This is a big resource, and we are obliged to use it very efficiently and effectively," Putin said, according to a Google-translation of quotes published by the state news agency.

Social obligations to citizens such as education and healthcare must also continue despite the added expenses, Putin said.

Russia's president said the increasing amount of funds used for defense was a key reason for appointing Andrei Belousov as new defense minister.

Belousov was appointed earlier this week, replacing former defense minister Sergei Shoigu, who has in turn been made Secretary of Russia's security council.

— Sophie Kiderlin

U.S. to provide additional military funding worth $2 billion to Ukraine, Blinken says

The U.S. will provide Ukraine with an additional $2 billion worth of military funding, U.S. Secretary of State Antony Blinken said Wednesday, adding that a security agreement between the U.S. and Ukraine may not be far off.

"We will provide an additional $2 billion of foreign military financing for Ukraine," Blinken said in a joint press conference with Ukrainian Foreign Minister Dmytro Kuleba. The funds have been put together in a "first of it's kind defense-enterprise fund," which aims to provide weapons imminently, boost Ukraine's defense-industrial base and help the country buy military equipment from elsewhere, he said.

"We're rushing ammunition, armored vehicles, missiles, air defense, rushing them to get to the front lines," Blinken said.

A security agreement between the U.S. and the Ukraine is expected to be signed within weeks as the "heavy lifting" has been done, he said.

— Sophie Kiderlin

Zelenskyy postpones foreign visits

Ukraine's President Volodymyr Zelenskyy on Wednesday instructed to postpone all of his scheduled foreign visits for several days, a spokesperson announced on social media.

"Volodymyr Zelenskyy has instructed that all international events involving him scheduled for the coming days be postponed and new dates coordinated. We are grateful to our partners for their understanding," Serhii Nikiforov said in a post on Facebook.

Nikiforov indicated that this came as Zelenskyy was updated on the developments in the Kharkiv region, where Russia launched a fresh offensive in recent days.

Zelenskyy was due to travel Spain and Portugal later this week.

— Sophie Kiderlin

Russia says it has taken control of three further settlements in Ukraine

The Russian defense ministry on Wednesday said its army had taken control of three further settlements in Ukraine.

Two of these settlements,  Lukyantski and Hlyboke are in the Kahrkiv region, and another is in the Zaporizhzhia area, the ministry said in several Google-translated posts on Telegram.

In the Kharkiv region, Russian forces "also advanced into the depths of the enemy's defense" and resisted several counterattacks, according to the ministry.

CNBC could not independently verify developments on the ground.

Fighting in the Kharkiv region in the north-east of Ukraine has intensified in recent days, after Moscow launched an offensive in the area earlier this month. Russia has made territorial gains and seized several settlements in the region since.

— Sophie Kiderlin

Read CNBC's previous live coverage here:

Zelenskyy calls off foreign trips as Russian forces press into northeast Ukraine