The latest satellite images provided by the US space technology company Maxar show that wide-scale Russian military activity persists close to Ukraine's borders, despite recent Russian claims of de-escalation and withdrawal.
Police in the Canadian capital of Ottawa have warned that action is "imminent" as they prepare to clear a blockade of protesters in the city.
Russia could invade Ukraine "at any time" and American citizens should leave immediately, the US has warned.
Russia and Belarus are due to start 10 days of joint military drills as concerns rise over the buildup of Russian forces on Ukraine's borders.
French President Emmanuel Macron has told reporters that President Vladimir Putin assured him that Russian forces would not ramp up the crisis near Ukraine's borders.
French President Emmanuel Macron has said the coming days will be crucial to de-escalating the Ukraine standoff, after a meeting with Russia's Vladimir Putin.
French President Emmanuel Macron has said he thinks a deal to avoid war in Ukraine is possible and that it is legitimate for Russia to raise its own security concerns.
The mayor of Canada's capital Ottawa has declared a state of emergency in response to more than a week of truckers' protests against Covid restrictions.
Lata Mangeshkar, one of India's most beloved singers, whose voice is the soundtrack to more than a thousand Bollywood films, has died aged 92.
Former US Vice-President Mike Pence has dismissed claims by Donald Trump that he could have stopped Joe Biden becoming president last year.
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.