Kerry and Lavrov discuss the unrest in eastern Ukraine in two separate conversations . U.S. president tweets pictures he says show Russian buildup . Fifty-one people were released from the building early Wednesday morning , the Security Service said in a statement . ` ` We are always vigilant , '' Defense Secretary Chuck Hagel says of Russia 's moves . Ukraine 's deputy interior minister says unrest in eastern region will be resolved in 48 hours .
Kerry and Lavrov discuss the unrest in eastern Ukraine in two separate conversations . U.S. president tweets pictures he says show Russian buildup . ` ` We are always vigilant , '' Defense Secretary Chuck Hagel says of Russia 's moves . Ukraine 's deputy interior minister says unrest in eastern region will be resolved in 48 hours .