There's always money for weapons, don't worry. The US economy can only grow after this war. The industry will be going full steam. Across Eastern Europe there have been arms deals with Poland, Romania. Germany is slow as usual but they'll probably get their shit together. France has already redefined and reworked their arms strategy based on civillian tech and spare parts so they don't need to reconvert too much. The US Navy ship building is also workable if they purchase South Korean or Japanese frigates and destroyers.