In a dose of irony, the planning meeting for the attack was held at Comet Ping Pong.
Russian and Turkish Presidents Vladimir Putin and Recep Tayyip Erdogan discuss Syrian ceasefire by telephone and agree it is generally observed. However in many parts of Syria fighting still continues, the date of the Astana peace conference has still not been agreed, and there is no confirmation that Turkey is preventing reinforcements and supplies reaching the Jihadis in Syria from across the Turkish border.
Barack Obama announces more sanctions against Russia, citing alleged Russian hacking during US election. However though the sanctions will annoy the Russians, they will not seriously affect them. Their true purpose is to create further embarrassment for Donald Trump by insinuating that he owes the Russians the Presidency.