“The US is concerned about the recent escalation of Russian aggression in eastern Ukraine, including an increase in Russian troop movements near the Ukrainian border.
Russia now has more troops on the border with Ukraine than at any time since 2014, ”Psaki said at a press briefing.
According to her, this week "five Ukrainian servicemen were killed."
Earlier, the press secretary of the Russian president Dmitry Peskov said that Russia does not pose a threat to any country in the world, including Ukraine.
He added that "the Russian army is moving on Russian territory in the directions in which it considers it necessary" to ensure the security of the state.
The Kremlin also noted that Russia is taking the necessary measures to ensure the security of its borders.