This shortage could dramatically alter the war’s course and give Russia a “significant advantage,” unless the U.S. Congress approves additional military aid to Kyiv soon. Read also: Security source reveals Czech President Pavel found artillery stockpile critical to Ukraine’s defense A high-ranking U.S. Department of Defense official believes that a critical turning point in the war is already underway. “The juncture starts now and it just keeps getting worse progressively through the spring and into summer,” the journalists quote the source. Read also: FM Kuleba calls on West to step up artill…