President Barack Obama vowed yesterday the United States will not fight another ground war in Iraq, seeking to reassure Americans about the level of US involvement after a top general suggested combat troops could be deployed against Islamic State forces.

Obama, who has spent much of his presidency distancing himself from the Iraq War, stressed during a speech at MacDill Air Force Base in Tampa that airstrikes would be the central US contribution to the fight against Islamic State, along with coordinating a coalition that he said now includes more than 40 countries.

“I want to be clear. The American forces that have been deployed to Iraq do not and will not have a combat mission,” Obama said.

“We will train and equip our partners. We will advise them and we will assist them. We will lead a broad coalition of countries who have a stake in this fight.”

His message came a day after General Martin Dempsey, chairman of the US military’s Joint Chiefs of Staff, left the door slightly ajar to the possibility of some ground forces during congressional testimony that worried some Democrats.

“As your commander in chief I will not commit you and the rest of our armed forces to fighting another ground war in Iraq,” Obama said.

The US has launched more than 160 airstrikes against Islamic State targets in several areas in Iraq and Obama has authorised similar attacks against the extremist group’s strongholds in Syria.

More than 1,600 American advisers have been dispatched to help Iraqi forces but Obama does not want them to get involved in ground combat to avoid a repeat of the Iraq War begun by his Republican predecessor, George W. Bush. In testimony to a Senate committee on Tuesday, Dempsey outlined scenarios in which he might recommend having US troops do more, potentially accompanying Iraqis during complicated offensives, such as a battle to retake the northern city of Mosul from Islamic State fighters.

The statement rattled some Democrats who worry about getting sucked into another war in Iraq.

“It’s for me a blanket ‘no,’” said Nancy Pelosi, the top Democrat in the Republican-controlled House of Representatives. “I don’t think the American people are up for it.”

But former Defence Secretary Robert Gates told CBS’s This Morning that Dempsey’s remark made sense because air power alone has its limitations.

“The reality is they’re not going be able to be successful against Isis strictly from the air,” he said, using an acronym for Islamic State.

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