Defense Secretary Lloyd Austin is committing to keep U.S. weapons moving to Ukraine as Kyiv faces one of its toughest moments against a renewed assault by Russia. Austin and as many as 50 defense leaders from Europe and around the world were meeting Monday to coordinate more military aid to Ukraine. He said, “We’re meeting in a moment of challenge.” He noted that Russia’s new onslaught on Kharkiv showed why the commitment was vital. Austin vowed to keep U.S. weapons moving “week after week.” However, those weapons have not fully reached the front lines and Ukrainians officials have said they are still struggling to fight back against a vastly more equipped Russian military.