Powerful explosions were heard in Kyiv early on Friday, and air raid sirens blared across Ukraine as residents braced for new Russian attacks after Moscow's lead warship in the Black Sea sank following a fire.

One of Russian President Vladimir Putin's closest allies warned NATO on Thursday that if Sweden and Finland joined the U.S.-led military alliance then Russia would deploy nuclear weapons and hypersonic missiles in an exclave in the heart of Europe.

Ukraine said its forces struck and seriously damaged the flagship of Russia’s Black Sea fleet, dealing a potentially major setback to Moscow’s troops as they try to regroup for a renewed offensive in eastern Ukraine after retreating from much of the north, including the capital.

More than 1,000 Ukrainian marines have surrendered in the port of Mariupol, Russia’s defence ministry said of its main strategic target in the eastern Donbas region, which has been reduced to ruins but is not yet under Russian control.

US President Joe Biden said for the first time that Moscow's invasion of Ukraine amounts to genocide, as President Vladimir Putin said Russia would "rhythmically and calmly" continue its operation and achieve its goals.

President Vladimir Putin said on Tuesday peace talks with Ukraine had hit a dead end, using his first public comments on the conflict in more than a week to vow that his troops would win and to goad the West for failing to bring Moscow to heel.

OPEC told the European Union on Monday that current and future sanctions on Russia could create one of the worst ever oil supply shocks and it would be impossible to replace those volumes, and signalled it would not pump more.

Escalating global geopolitical tensions arising from Russia’s invasion of Ukraine could spill over to Asia through sharper-than-expected increases in energy and other commodity prices, said experts yesterday.

Ukraine said yesterday that tens of thousands of people have likely been killed in Russia’s assault on Mariupol and Russian forces have slowed down evacuations from the besieged southeastern city, where conditions are desperate.

The mayor of the Ukrainian city of Mariupol tells The Associated Press that more than 10,000 civilians have died in the southeastern city since the Russian invasion in February.

American President Joe Biden today held a virtual meeting with Indian Prime Minister Narendra Modi and said the US and India would continue their close consultation on how to manage and stabilise the effects of the Russia-Ukraine war.

Ukraine said yesterday it was seeking another round of European Union sanctions against Moscow and more military aid from its allies as it braces for a major Russian offensive in the east of the country.

Ukraine is ready for a tough battle with Russian forces amassing in the east of the country, President Volodymyr Zelenskiy said on Saturday, and British Prime Minister Boris Johnson offered fresh financial and military support during a surprise visit.

Ukraine is ready for a tough battle with Russian forces amassing in the east of the country, President Volodymyr Zelensky said yesterday, a day after a missile attack in the east that officials said killed more than 50 civilians trying to evacuate.

European Commission President Ursula von der Leyen said on Saturday that Russian forces appeared to have committed war crimes by targeting civilians in Ukraine, but she said lawyers must investigate the alleged incidents.

A rocket attack on a train station in the eastern Ukrainian city of Kramatorsk killed dozens yesterday, as civilians raced to leave the Donbas region in the crosshairs of the Russian army.

The European Union has imposed sanctions on two adult daughters of Russian President Vladimir Putin as part of a new package of measures targeting Russia’s economy, businessmen and oligarchs in retaliation for the Kremlin’s invasion of Ukraine, according to two EU officials.

At least 39 people were killed and 87 wounded on Friday when two rockets hit a railway station in eastern Ukraine packed with evacuees, Ukrainian authorities said, as the region braced for a major Russian offensive.

Pink Floyd today released their first new song in almost 30 years to support war-torn Ukrainians.

Bangladesh has abstained from voting on a resolution to suspend Russia's membership of the UN Human Rights Council in the wake of human rights violations by Russia's military operation in Ukraine.