Ukraine said on Wednesday that Russian-staged votes in four Ukrainian regions on becoming part of Russia were "null and worthless", and that Kyiv would press on with efforts to liberate Ukrainian territory occupied by Russian forces.
Urging its international partners to impose tough new sanctions on Moscow and provide Kyiv with more military aid, the Ukrainian Foreign Ministry said in a statement that Ukraine would never agree to Russian ultimatums.
"Forcing people in these territories to fill out some papers at the barrel of a gun is yet another Russian crime in the course of its aggression against Ukraine," it said.
Describing the "referendums" organised by Russia as a sham, it said they had "nothing to do with expression of will" and had no implications for Ukraine’s "administrative-territorial system and internationally recognized borders".
"Ukraine and the international community condemn such actions of Russia and consider them null and worthless," the statement said.
"Ukraine has every right to restore its territorial integrity by military and diplomatic means, and will continue to liberate the temporarily occupied territories. Ukraine will never agree to any Russian ultimatums. Moscow's attempts to create new separation lines or weaken international support for Ukraine are doomed to fail."
US President Donald Trump and Ukrainian President Volodymyr Zelenskyy agreed on Wednesday to work together to end Russia's war with Ukraine, in what the White House described as a "fantastic" one-hour phone call.
Serbia's parliament formally accepted the resignation of Prime Minister Milos Vucevic on Wednesday, triggering a 30-day deadline for the formation of a new government or the calling of a snap election.
Six migrants have died and 40 are missing after a shipwreck off the Italian island of Lampedusa late on Tuesday, Italy's main news agency ANSA reported on Wednesday.
Israeli airstrikes pounded Gaza and killed more than 400 people on Tuesday, Palestinian health authorities said, shattering nearly two months of relative calm since a ceasefire began, as Israel warned the onslaught was "just the beginning."
NASA astronauts Butch Wilmore and Suni Williams have returned to Earth in a SpaceX capsule with a soft splashdown off Florida's coast, nine months after their faulty Boeing Starliner craft upended what was to be a week-long stay on the International Space Station (ISS).