Concerns over increased Russian troop concentrations near Ukraine and the Baltics have intensified in recent days, and the United States is closely following a number of reported Russian maneuvers, the State Department said on Wednesday.
The Pentagon warned that it was “aware of multiple Russian military movements” in the region, which are “characteristic of Russia’s recent behavior.”
A State Department spokeswoman said on Wednesday that the United States had received multiple reports of Russian troop movements near Ukraine and other nations in the region, but did not provide details on specific locations or troop numbers.
The spokeswoman declined to go into detail about what those movements might be or what effect they might have.
Russian forces are increasingly visible around areas in eastern Ukraine that have been under heavy Ukrainian military force for months.
U.S. intelligence officials have reportedly warned that a large Russian armored column may be headed to the Baltics, a move that would pose a growing threat to allied military forces.
U.S. officials have said in recent days that they believe that Russia plans to attack all of Ukraine.
Tensions between Ukraine and Russia have mounted since Moscow annexed the Crimean Peninsula in March.