Russia, Germany discuss OSCE observers' detention in Ukraine
UKRAINE-CRISIS/OSCE (URGENT):Russia, Germany discuss OSCE observers' detention in Ukraine
Berlin asks Russia to help secure release of OSCE team in Ukraine
UKRAINE-CRISIS/OBSERVERS-GERMANY (URGENT):Berlin asks Russia to help secure release of OSCE team in Ukraine
Mayor of Ukrainian city shot and wounded: report
UKRAINE-CRISIS/KHARKIV-MAYOR (URGENT):Mayor of Ukrainian city shot and wounded: report
Pro-Russian activists gather near the seized office of the SBU state security service in Luhansk, eastern Ukraine
Pro-Russian activists gather near the seized office of the SBU state security service in Luhansk, eastern Ukraine, April 28, 2014. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)
The seized office of the SBU state security service is seen in Luhansk, eastern Ukraine
The seized office of the SBU state security service is seen in Luhansk, eastern Ukraine, April 28, 2014. The sign reads, "All on referendum". REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)
The seized office of the SBU state security service is seen in Luhansk, eastern Ukraine
The seized office of the SBU state security service is seen in Luhansk, eastern Ukraine, April 28, 2014. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)
An activist attaches a placard on the barricades in front of the seized office of the SBU state security service in Luhansk, eastern Ukraine
An activist attaches a placard on the barricades in front of the seized office of the SBU state security service in Luhansk, eastern Ukraine, April 28, 2014. Armed pro-Russian separatists who took control of the police headquarters in the east Ukrainian town of Kostyantynivka have also seized the town administration building, a spokesman for the regional government said. The placard reads, "Donbass are united". REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)
An activist attaches a Russian national flag on the barricades in front of the seized office of the SBU state security service in Luhansk, eastern Ukraine
An activist attaches a Russian national flag on the barricades in front of the seized office of the SBU state security service in Luhansk, eastern Ukraine, April 28, 2014. Armed pro-Russian separatists who took control of the police headquarters in the east Ukrainian town of Kostyantynivka have also seized the town administration building, a spokesman for the regional government said. The placard reads, "Donbass are united". REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)
Obama: U.S. to unveil new sanctions on Russia on Monday
UKRAINE-CRISIS/OBAMA (UPDATE 1, PICTURES, TV):UPDATE 1-Obama: U.S. to unveil new sanctions on Russia on Monday