UN High Representative for Disarmament Affairs Angela Kane (3rd R) walks out of a hotel in Damascus, Syria, Aug. 26, 2013. The UN chemical investigation team headed to the eastern al-Ghouta countryside of the Syrian capital Damascus Monday to start an on-site probe into the latest incident of the alleged use of chemical weapons. The UN mission secured the permission after Syria reached an agreement Sunday with Angela Kane. (Xinhua/Zhang Naijie)

UN High Representative for Disarmament Affairs Angela Kane (in blue) walks out of a hotel in Damascus, Syria, Aug. 26, 2013. The UN chemical investigation team headed to the eastern al-Ghouta countryside of the Syrian capital Damascus Monday to start an on-site probe into the latest incident of the alleged use of chemical weapons. The UN mission secured the permission after Syria reached an agreement Sunday with Angela Kane. (Xinhua/Zhang Naijie)

UN High Representative for Disarmament Affairs Angela Kane watches as the convoy of U.N. inspectors leave the Four Season Hotel in Damascus, Syria, on Aug. 26, 2013. The UN chemical investigation team will enter the eastern al-Ghouta countryside of the Syrian capital Damascus Monday to start an on-site probe into the latest incident of the alleged use of chemical weapons. (Xinhua/Bassem Tellawi)

The convoy of UN inspectors leave the Four Season Hotel in Damascus, Syria, on Aug. 26, 2013. The UN chemical investigation team will enter the eastern al-Ghouta countryside of the Syrian capital Damascus Monday to start an on-site probe into the latest incident of the alleged use of chemical weapons. (Xinhua/Bassem Tellawi)

UN High Representative for Disarmament Affairs Angela Kane watches as the convoy of U.N. inspectors leave the Four Season Hotel in Damascus, Syria, on Aug. 26, 2013. The UN chemical investigation team will enter the eastern al-Ghouta countryside of the Syrian capital Damascus Monday to start an on-site probe into the latest incident of the alleged use of chemical weapons. (Xinhua/Bassem Tellawi)