Here's what I think about what's happening in Syria

The Russians hate all Sunni Muslims like no one else on earth except the Iranian Shias. So, if Russians find ANY ISIS prisoners they are likely to just kill them because all ISIS are Sunni Wahabi muslims. Turkey doesn't want a war with Russia because it would lose. Iran is the enemy of Turkey and the Ally of Russia. Syria is the ally of Iran and Russia. Turkey has a lot to lose in this situation. By getting an alliance going with Assad in Syria the Kurds are now aligned with Russia too in this and all are against Turkey. So, expect a lot of ISIS soldiers and ISIS families to be secretly executed by Russia, Syria and Iran and expect Turkey to try to save ISIS Soldiers and families so they can fight against Russia, Syria and Iran as ISIS guerrillas in the near and far future. This is what I think is going to happen now (among other things).