At least 100 pro-Russian protesters attacked the police headquarters in the east Ukraine city of Horlivka on Monday, a witness said.
The Ukrainian government on Sunday launched an "anti-terrorist" operation in an eastern city where armed pro-Russian men seized police and security services buildings, Interior Minister Arsen Avakov said.
Three people were dead and one in custody following multiple shootings Sunday afternoon in the suburban area of the US city of Kansas.
NATO Secretary General Anders Fogh Rasmussen on Sunday showed concerns over the tension in Eastern Ukraine, urging Russia to de-escalate the crisis.
Kiev said on Sunday that several people have been left "dead and wounded" in fighting to oust pro-Russian gunmen holed up in a police station in Ukraine's restive east.
The UN Security Council is scheduled to meet behind closed doors in an emergency session on the situation of Ukraine on Sunday night as tensions are rising in the eastern part of the former Soviet republic.
The Vienna Philharmonic Orchestra is returning a painting stolen by the Nazis to the descendants of its rightful owners, in the latest high-profile restitution case in Austria.
Hero or traitor? The United States is still polarized over Edward Snowden and whether the newspapers that exposed the extent of the National Security Agency's vast global spying network should be lauded or condemned.
Vladimir Putin looks likely to go down in history as the Russian leader who won back Crimea, but he is fighting to avoid also being remembered as the man who let Ukraine escape from Moscow's sphere of influence.
Ukrainian security forces have launched an "anti-terrorist" operation to end the grip of separatists on an eastern town, Ukraine's interior minister said.
US Vice-President Joe Biden will travel to Kiev, the Ukrainian capital, for meetings with officials and members of the public on April 22, the White House said Saturday.
Indonesian Air Force personnel escort 65-year-old Swiss pilot Heinz Peier after his plane was intercepted by jet fighters and forced to land at Soewondo Air Base in Medan, North Sumatra, Indonesia, April 10, 2014.