Western nations have condemned Moscow's plans to hold urgent so-called referendums in parts of Ukraine that are currently under Russian control.
The nation has paid a final farewell to Queen Elizabeth II, with a state funeral and military procession.
Sweden's prime minister says she will stand down after her government was defeated in Sunday's election.
Prince William and Prince Harry will walk together behind the Queen's coffin in a procession in London on Wednesday.
Ukrainian officials say they are targeting towns in the eastern Donbas region after making a series of gains in a rapid counter-offensive.
Kenneth Starr, the prosecutor whose investigation led to President Bill Clinton's impeachment, has died at the age of 76, his family says.
You can normally expect Russian state TV's flagship weekly news programme to trumpet Kremlin successes.
Ukrainian forces have seized even more territory from Russia as they continue their counter-offensive, the country's president has said.
At the moment the Queen died, the throne passed immediately and without ceremony to the heir, Charles, the former Prince of Wales.
Queen Elizabeth II, the UK's longest-serving monarch, has died at Balmoral aged 96, after reigning for 70 years.
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.