Is there hope for Iraq? It depends on what you are hoping for.

It is becoming clearer that there is little hope of destroying Islamic State in Iraq. Islamic State has no shortage of new recruits. Its fighters capture heavy weapons with such ease that the United States is forced to direct air strikes against equipment abandoned by the Iraqis — even as it ships in more. Islamic State holds territory that will allow it to trade land for time, morph into an insurgency and preserve its forces by pulling back into Syrian territory it controls even if Iraq’s government, with Iranian and American help, launches a major assault.

Islamic State maintains support among Iraq’s Sunnis. The more the Shi’ites align against it, the more Sunnis see no other choice but to support Islamic State, as they did al Qaeda after the American invasion in 2003. Stories from Tikrit, where Shi’ite militia-led forces defeated Islamic State, describe “a ghost town ruled by gunmen.” There are other reports of ethnic cleansing in the Euphrates Valley town of Jurf al-Sakhar. Absent a unified Iraq, there will always be an al Qaeda, an Islamic State or another iteration of it to defend the Sunnis.

The only way for Iraq to remain unified was a stalemate of force, with no side having the might to win nor weak enough to lose, with negotiations to follow. As the United States passively watched the Iranians become its proxy boots on the ground against Islamic State, all the while knowing Tehran’s broader agenda was a Shi’ite Iraqi client, that possibility was lost.

It’s possible to pin down the failure to a single battle. The last hope that Iraq would not become an Iranian client was dashed after Islamic State’s defeat in Tikrit. The victory triggered the Iraqi central government to dismiss American and Kurdish support for a drive toward strategically important Mosul. The government all but abandoned the idea of a nonsectarian national army; it turned instead to a gang of Iranian-supported Shi’ite militias with a bundle of anti-Sunni agendas. Baghdad pointed those forces toward Ramadi.

Islamic State is also in Ramadi, but it had already poked into most of the city over the past year. It needed only 400 fighters for the final push last week. The threat was not new. The move by Baghdad on Ramadi is thus more long-term political than short-term tactical: think of Ramadi not as a gate through which Islamic State must pass moving east toward Baghdad (Islamic State cannot occupy the Shi’ite city of four million, defended by untold militia, any more than the German army could capture Stalingrad) but as a gate the Shi’ite militias must traverse headed west to control the Sunni homeland of Anbar.

The Kurds, America’s great loyalist hope, were energetic fighters against Islamic State in the north, at least as long as their peshmerga was reclaiming territory — such as the city of Arbil — from the central government in Baghdad. The Kurds are nowhere to be seen now that fighting has shifted to Anbar. Kurdistan cares little about the Sunnis other than to keep them away from its territory. Baghdad, with Islamic State on its plate, under political pressure from Washington to keep the peace with the Kurds and facing a powerful peshmerga, is unlikely to make any near- to mid-term moves against Kurdistan.

So, besides simply hoping for the best, what can the United States do? Not much. Most of the possible game changers have already failed.

Ever more air power and raids by Special Operations forces cannot hold ground or do more than dilute Iranian influence in spots, assuming they are not actually assisting the Iranians. President Barack Obama has ruled out large numbers of U.S. ground forces. (Not that troops matter; the 166,000 U.S. troops deployed in Iraq at the surge’s peak failed to win anything lasting, and Obama’s final pullout in 2011 was numerically meaningless.) The training the United States is doing with the Iraqi Army in 2015 will accomplish about the same as the training the United States did with the Iraqi Army from 2005 to 2011. Even the U.S. secretary of defense was reduced to near-mockery when describing Iraq’s army in Ramadi; it lacked the will to fight, he said.

America’s latest man in Baghdad, Prime Minister Hader al-Abadi, has no more moved his country toward any kind of reconciliation than his predecessor, Nouri al-Maliki, did. Abadi’s reliance on Shi’ite militias only draws him closer to Iran.

Obama’s post-Ramadi hope is once again to try to attract and train an anti-Islamic State Sunni force. There’s no support for that idea in Baghdad itself. The central government fears arming domestic Sunnis, besides a few token “federal police” units. It seems unlikely the Sunnis will be fooled by another U.S.-sponsored “awakening,” like the one in 2006 that helped root out insurgents in Anbar province. Baghdad left the fighters without paychecks from — or meaningful representation in — the government. As America watched, Maliki’s failure to capitalize on the original awakening is a large part of why Iraq is falling apart now.

The much-ballyhooed pan-Arab coalition against Islamic State proved to be a short-lived photo op. America flies roughly 85 percent of the missions against Islamic State, with Western allies filling in a good part of the remaining percentage. No Arab ground troops ever showed up, and key coalition countries are now openly snubbing Washington over its possible nuclear deal with Iran.

The United States appears to have run out of hope any of its cards will play in the long game.

Iraq’s Sunnis can, at best, hope to be pushed into an Islamic State-protected enclave on the fuzzy Syrian border, a development Washington would likely quietly support to avoid a politically embarrassing ethnic cleansing. Iraq would remain an Iranian client state, dependent on its patron to keep Islamic State in check. Iranian and Iraqi political needs would mostly be aligned at that point, though more Islamic State fighters nearer to Syria would pose its own problems. This would expose what might be the key flaw in American policy in Iraq: The people America thinks are its allies don’t actually want what America wants.

The Iraq of 2003 is gone. The Iraq of 2014 is gone. America’s mistakes made in between have had consequences because, as everyone knows, hope alone is a poor strategy.