The United States has warned Russia that it would be a "grave mistake" to embark on military intervention in Ukraine.
"I don't think there should be any doubt whatsoever that any kind of military intervention that would violate the sovereign territorial integrity of Ukraine would be a huge - a grave mistake," US Secretary of State John Kerry said.
More top news
Cheap commercial spaceflight took one giant leap closer to reality after Blue Origin successfully landed a rocket - upright - in Texas.
Back-up turkey Honest will also spend the rest of his life living comfortably in a barn called the White House on Turkey Hill.
HMP Holloway - Europe's largest women's jail is to be shut down. ITV News looks back at its history and some of its infamous inmates.