Kerry warns Russia of 'consequences’

Secretary of State John KerryJohn Forbes KerryJohn Kerry to NYU Abu Dhabi: We can't address world problems by 'going it alone' Juan Williams: Trump's dangerous lies on Iran Pompeo: US tried, failed to achieve side deal with European allies MORE warned Russia on Saturday that Moscow faces "additional consequences" if it doesn't take steps to de-escalate violence in eastern Ukraine and pull back troops from its border.

During a phone call with Russian Foreign Minister Sergey Lavrov, Kerry expressed strong concern that attacks by armed militants in eastern Ukraine have been orchestrated and synchronized, similar to previous attacks in eastern Ukraine and Crimea, according to a White House read-out of the call.

On Saturday, troops wearing the same uniform as Russian forces that invaded Crimea in February occupied police headquarters in the eastern Ukraine city of Kramatorsk, The Associated Press reported.