Summary: This month, a Russian veto at the U.N. Security Council suspended humanitarian aid delivery to rebel-held northwest Syria. The Syrian regime declared all aid deliveries to rebel-held territories must now be coordinated through Damascus and not the U.N. As John Yang reports, more than four million Syrians, most of whom are internally displaced, have lost access to crucial humanitarian aid. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
