President Barack Obama vowed on Wednesday the United States will **t fight a**ther Ground war in Iraq, seeking to reassure Americans about the level of U.S. 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 U.S. contribution to the fight against Islamic State, along with coordinating a coalition that he said **w includes more than 40 countries.