The US has accused Russia of deploying more air defence systems in eastern Ukraine in breach of a ceasefire deal.
The state department also said Russia was involved in training separatist forces in the area and building up its forces along the border.
The Kremlin has not yet responded to the claims.
A truce between Ukrainian forces and pro-Russian rebels in east Ukraine was brokered by the West in Minsk in February.
Ukraine accuses Russia of arming the rebels and sending Russian troops over the border – a claim Moscow denies.
State department spokeswoman Marie Harf said in a statement that “combined Russian-separatist forces” were …read more
Source: Afghanistan Times