WASHINGTON, Oct. 18 -- Sen. Roger Wicker, R-Mississippi, issued the following news release: Senator Roger Wicker, R-Miss., the highest-ranking Republican on the Senate Armed Services Committee, is demanding that President Biden exercise his responsibilities as commander-in-chief and give Ukraine the weapons it needs to make a "substantial difference" on the battlefield in the last 90 days of his term. Senator Wicker specifically called on the president to provision Ukraine with weaponry at a m  more