Seven months after Syria exported the last of its known stockpile of chemical weapons ingredients, the first of its 12 production facilities has been destroyed, the Organization for the Prohibition of Chemical Weapons reported Tuesday. Ahmet Uzumcu, director general of the organization, which polices the chemical weapons treaty that Syria signed in late 2013, said the destruction of the first facility had been completed Jan. 31 after a delay he attributed to “technical reasons.” He gave no timetable for the rest. Western countries have accused President Bashar al-Assad of Syria of procrastination in complying with the terms of the treaty, which he agreed to sign after a chemical weapons attack in a Damascus suburb for which government forces and insurgents blamed each other.