Today the Syrian army gained fire control over the M5 highway north of Khan Shaykhun.
The jihadists in the soon closed cauldron south of that point are now cut off from road bound resupplies.
This map shows the situation five days ago with the position of the Turkish observation point within the area.
This morning Turkey sent (vid) a 29 truck convoy with five tanks, two infantry fighting vehicles, ammunition and additional personal toward the observation post in Morek, south of Khan Shaykhun.
Before the convoy passed through Maarat al-Numan, 20 kilometers north of Khan Shaykhun, the Russian airforce bombed its path (vid). The leader of Faylq al-Sham, a 'Syrian rebel' group controlled by the Turkish intelligence service, was escorting the Turkish army convoy in a technical. He was killed. No Turkish soldiers were harmed. The convoy stopped and will have to return to Turkey. The tanks and the ammunition will not reach the jihadis in Khan Shaykhun.