The United Nations Security Council approves aid deliveries to northwest Syria through one border crossing with Turkey, a day after its authorization for the six-year-long humanitarian operation ended. Russia and China abstain today on this week's fifth attempt to approve this help.
The United States removes NATO ally Turkey from the Joint Strike Fighter program, following the country's acquisition of the Russian S-400 missile system. Turkey had planned to buy 100 F-35 Lightning II jets.
Russia and China veto a draft United Nations Security Council resolution sponsored by France, the United Kingdom and the United States calling for sanctions against the Syrian government and President Bashar al-Assad over allegations that the government used chemical weapons in the conflict.
Syrian President Bashar al-Assad says he will not negotiate with armed groups, a day after the Syrian opposition's multi-group, two-day meeting in Riyadh agreed on a framework for future negotiations to end the conflict. Assad's statement also appears to put a damper on peace talks Russia and the United States are working to set up.
The United States and Russia sign an agreement designed to avoid conflict between both countries' warplanes in Syria. The Pentagon said the agreement will remain secret; a hotline will enable both countries to directly communicate.