1、CRS INSIGHT Prepared for Members and Committees of Congress INSIGHTINSIGHTi i Russian Military Mobilization on Ukraines Borders and in Occupied Crimea April 27, 2021 In March 2021, Russia began massing troops on the Ukrainian border and in Ukraines occupied Crimea region. Observers have disagreed ab
2、out whether Russia is preparing for a future invasion or engaging in coercive signaling. Russia continued to build up its forces in April, dismissing concerns and stating that it was conducting military exercises. On April 22, Russia announced that most units would return to their permanent bases bu
3、t some would remain deployed through upcoming exercises in September. Which units will remain and which will return to their bases remains to be seen. Congress has expressed support for Ukraines territorial integrity and for deterring Russian aggression. Russian Troop Deployments Despite a cease-fir
4、e negotiated in July 2020, fighting between Ukrainian armed forces and Russia-led rebel fighters in the Donbas region of eastern Ukraine has increased since February 2021. Both sides have reported increased casualties and cease-fire violations, including the use of heavy artillery. International mon
