The United States is aware of reports of unusual Russian military activity near the border with Ukraine and is closely monitoring the situation in the region, Elisabeth Rosenstock-Siller, Acting Deputy Chief of Mission at the U.S. Mission to the OSCE, has said.
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UkrInform: US monitoring Russia’s unusual military activity near Ukraine

This handout satellite image released by Maxar Technologies and taken on Nov. 1, 2021 shows the presence of a large ground forces deployment on the northern edge of the town of Yelnya, Smolensk Oblast, Russia.