BAGHDAD -Iran-aligned Iraqi armed group Kataib Hezbollah warned on Sunday it would resume attacks on U.S. troops in the region if the United States intervenes in the conflict between Israel and Iran. “We are closely monitoring the movements of the American enemy's army in the region," Kataib Hezbollah Secretary-General Abu Hussein al-Hamidawi said in a statement. Founded in the aftermath of the 2003 U.S.-led invasion of Iraq, Kataib Hezbollah is one of the elite Iraqi armed factions closest to Iran.