From Tom Friedman’s NYT column:

What Obama also has right is that old saying: “If you’re in a poker game and you don’t know who the sucker is, it’s probably you.” That’s the game we’re in in Iraq and Syria. All our allies for a coalition to take down ISIS want what we want, but as their second choice.

Kurds are not going to die to liberate Mosul from ISIS in order to hand it over to a Shiite-led government in Baghdad; they’ll want to keep it. The Turks primarily want to block the Kurds. The Iranians want ISIS crushed, but worry that if moderate Sunnis take over its territory they could one day threaten Iran’s allies in Iraq and Syria. The Saudi government would like ISIS to disappear, but its priority right now is crushing Iranian-backed rebels in Yemen. And with 1,000 Saudi youth having joined ISIS as fighters — and with Saudi Arabia leading the world in pro-ISIS tweets, according to a recent Brookings study — the Saudi government is wary about leading the anti-ISIS fight. The Russians pretend to fight ISIS, but they are really in Syria to protect Bashar al-Assad and defeat his moderate foes.