The Turkish soldiers were killed by aircraft in an attack by either the Russian or Syrian Air Force. The Russians are blaming Turkey for the deaths because they didn't inform them of their troop positions.
Turkey threatened to respond to 'all' of their ground positions.
"Turkish forces destroyed five Syrian regime choppers, 23 tanks, 10 armored vehicles, 23 howitzers, five ammunition trucks, a SA-17, a SA-22 air defense system as well as three ammunition depots," According to Turkish Defence Minister Hulusi Akar.