In that incident , Russian forces fought troops from Georgia in a brief conflict that followed Russian promises to defend Russian citizens in the restive Georgian province of South Ossetia . NEW : more than 120 personnel are participating in the exercises , U.S. says . Russia has not yet seen signs pro-Russian forces are prepping for a move into Russia . But a senior administration official says military exercises are raising concerns . ` ` Let 's see no provocative actions by anyone , '' U.S. defense secretary says .
NEW : more than 120 personnel are participating in the exercises , U.S. says . Russia has not yet seen signs pro-Russian forces are prepping for a move into Russia . But a senior administration official says military exercises are raising concerns . `` Let 's see no provocative actions by anyone , '' U.S. defense secretary says .