Iraqi officials have given their American counterparts clear signals that Baghdad is willing to let U.S. fighter jets operate out of Iraqi air bases, a move that would allow planes to stay airborne longer and deliver more strikes. But the Obama administration, at least for now, doesn’t seem all that interested.

The back-channel discussions over the bases, which have not previously been reported, highlight the White House’s uncertainty about escalating its low-level air war against the Islamic State. President Barack Obama proudly pulled all U.S. troops out of Iraq in late 2011. He has repeatedly stressed that the military campaign there that began Aug. 8 will be limited in both scope and duration. With broad swaths of Syria and Iraq under Islamic State control, key U.S. allies are pressing the administration to step up the fight. Taking off from Iraqi bases would make it much easier to do so because it would put the American aircraft closer to their targets.

“Everything is harder when you’re doing it from the outside,” a senior military official said. […]