The head of U.S. Northern Command is drafting a first-ever strategic estimate for the Arctic, the latest development by the Defense Department to refine plans for the polar region, an expected prelude to a theater campaign plan and operational plan for a region where military threat is considered low but activity is expected to increase as sea ice recedes. Gen. Lori Robinson, NORTHCOM commander, told the Senate Armed Services Committee April 6 that she is preparing a policy document that...