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.
Here's more from Vladimir Putin, who is addressing the Russian Security Council - and, indirectly, the Ukrainian military.
US Secretary of State Antony Blinken says he is "convinced" that Russian president Vladimir Putin will try to overthrow the Ukrainian government.
Russian military forces have seized control of the Chernobyl nuclear power plant, Ukrainian officials say.
These are the sanctions Prime Minister Boris Johnson has just announced the UK will put on Russia:
A German government spokesman said Chancellor Olaf Scholz had spoken to Ukrainian President Volodymyr Zelenskiy and assured him of solidarity.
The US has hit Russia with wide-ranging sanctions over what President Joe Biden called "the beginning of a Russian invasion of Ukraine".
As we continue to bring you more from the House of Commons this lunchtime, here's a recap of Prime Minister Boris Johnson's statement on Ukraine he made to MPs:
Just as Boris Johnson sets out his approach, the EU has published its sanctions proposal in reaction to Vladimir Putin recognising the two breakaway regions in eastern Ukraine and sending troops there as what he has called a peacekeeping force.
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.