Russia has banned British airlines from landing at its airports or crossing its airspace, its state civil aviation regulator said on Friday.

Across Ukraine, at least 137 "heroes" were killed after the first day of fighting following Russian invasion, President Volodymyr Zelensky said, calling up conscripts and reservists nationwide to fight in a general mobilisation.

Ukraine's president said Friday his country had been left on its own to fight Russia after the Kremlin launched a large-scale invasion that killed 130 Ukrainians in the first day.

Russian and Ukrainian forces fought on Thursday for control of Chernobyl, the still radioactive site of the world's worst nuclear accident and a factor in the collapse of the Soviet Union.

Ukrainian President Volodymyr Zelenskiy vowed on Friday to stay in Kyiv as his troops battled Russian invaders who are advancing toward the capital in the biggest attack on a European state since World War Two.

Ukrainian forces battled Russian invaders on three sides on Thursday after Moscow mounted an assault by land, sea and air in the biggest attack on a European state since World War Two.

President Joe Biden unveiled harsh new sanctions against Russia on Thursday after Moscow launched an all-out invasion of Ukraine, imposing measures to impede Russia's ability to do business in the world's major currencies along with sanctions against banks and state-owned enterprises.

He threatened to impose the harshest sanctions ever on Russia. He worked to galvanise US allies into a united front. He supplied Ukraine with more weapons than any American president before him. And he beefed up US forces on Nato’s eastern flank as reassurance of his commitment.

Russian President Vladimir Putin launched a ‘full-scale invasion’ of Ukraine yesterday, killing dozens and forcing thousands to flee for their lives in the pro-Western neighbour.

With oil prices hitting above $100 in the wake of Russia’s invasion of Ukraine, local businesses yesterday feared that the war would have a ripple effect on their domestic and international operations as both countries are major suppliers of agricultural commodities.

The prayers of the entire world are with the people of Ukraine tonight as they suffer an unprovoked and unjustified attack by Russian military forces. … The world will hold Russia accountable.

Satellite imagery shows a new build-up of Russian troops on the border with Ukraine, and Kyiv says Moscow has mobilised 100,000 soldiers along with tanks and other military hardware.

Russia has begun a large-scale military attack on Ukraine, its southern neighbour, on the orders of Russian President Vladimir Putin. There are reports of attacks on Ukrainian military infrastructure across the country, and Russian convoys entering from all directions. Here is what we know so far:

A son wept over the body of his father among the wreckage of a missile strike in a residential district in the eastern Ukrainian town of Chuguiv as the country reeled yesterday from Russia’s invasion.

Indian Prime Minister Narendra Modi tonight spoke to Russian President Vladimir Putin over phone and called for an immediate cessation of violence between Russia and Ukraine.

Russia launched a wide-ranging attack on Ukraine on Thursday, hitting cities and bases with airstrikes or shelling, as civilians piled into trains and cars to flee. Ukraine’s government said Russian tanks and troops rolled across the border in a “full-scale war” that could rewrite the geopolitical order and whose fallout already reverberated around the world.

The Chernobyl nuclear power plant has been captured by Russian forces, an adviser to the Ukrainian presidential office, Mykhailo Podolyak, said on Thursday.

US President Joe Biden met with his counterparts from the Group of Seven allies on Thursday morning to map out more severe measures against Russia after President Vladimir Putin launched what Biden called "a premeditated war" against Ukraine.

Although Ukrainians had been warned for weeks that war with Russia was imminent, when the attacks finally came Thursday many seemed not to know how to react.

Prime Minister Boris Johnson said Britain and its allies would unleash a massive package of economic sanctions to hobble the Russian economy after the Kremlin launched an all-out invasion of neighbouring Ukraine on Thursday.