I wouldn't risk one US life for a hundred lives of foreign citizens who won't bother to defend themselves.
These people are fighting with small arms against the heavily armed ISIS, Kurdish women have become suicide bombers, men and boys who were safe in Turkey have returned to fight against the invasion and will certainly die that way.
Why not do a minimum amount of research before you make these claims?
UN warns of pending 'massacres' as ISIS closes in on Syrian city | Fox News
Syria town of Kobani on Turkish border will fall to ISIS, Turkish leader says - World - CBC News
Allowing Jihadis to establish psuedo states only allows them to recruit, train, fund raise and network openly and on a vast scale. This is exactly what happened in the Taliban portions of Afghanistan and this directly facilitated 9-11.
If, when defending your support for Donald Trump, and your response is,
"But but but... HILLARY!!!", then you lost the argument before you even began.