Several NATO countries are failing to fulfill pledges to provide Ukraine with air defense systems, Bloomberg reported on Aug. 20, citing undisclosed sources. At least five systems pledged at last month’s NATO Summit in Washington D.C. have failed to materialize so far, the outlet said. Though it does not mention the specific countries behind the air defense pledges, President Volodymyr Zelensky on Aug. 18 singled out the U.S., U.K., and France during his evening address in which he called on allies to speed up deliveries of promised weapons systems. “There are no vacations in war,” he said, ad…