A vote in Belarus has cleared the way for the former Soviet state and current Kremlin ally to get nuclear weapons for the first time since the country gained independence in 1990.
Japan’s former Prime Minister Shinzo Abe has controversially suggested his country should consider allowing the US to base nuclear weapons in his country, following Russia's invasion of Ukraine.
The rouble has slumped by 30% against the US dollar, after Western nations announced new sanctions against Russia over its invasion of Ukraine.
Vladimir Putin has ordered Russia's military to put its deterrence forces, which include nuclear weapons, on "special alert".
Commission President Ursula von der Leyen said the bloc would, for the first time in its history, "finance the purchase and delivery of weapons and other equipment to a country that is under attack".
The mayor of Ukraine’s capital Kyiv has said there are no Russian troops in the city, as it continues to defend itself from attacks.
As Germany announces a huge increase in defence spending (see below and 11:04 GMT post) German police say more than 100,000 people are taking part in a protest against the Russian invasion in Berlin.
Russia's central bank is appealing for calm amid fears that new financial sanctions could spark a run on its banks - that is, too many people trying to withdraw money.
The Biden administration asked Congress on Friday to approve $6.4bn (£4.8bn) in aid for Ukraine.
Russia's unmanned Luna-25 spacecraft has crashed into the Moon after spinning out of control, officials say.
Donald Trump has confirmed that he will not take part in Republican presidential debates with his rivals in the race for the White House.