Russia has accused the United States of forcing Kyiv to continue the conflict in eastern Ukraine, where government forces have been battling Russian-backed separatists for more than a year.
In a statement on June 11, the Russian Foreign Ministry said Russia was not carrying out any "unusual military activity."
It also urged Washington to fully implement a treaty on eliminating intermediate-range and shorter-range missiles.
The statement comes after a U.S. State Department report accused Russia of violating its arms treaty obligations.
Based on reporting by Reuters, TASS, and Interfax