The United States and Iraq are drawing up a campaign plan for offensive operations by Iraqi ground forces to gradually reclaim towns and cities that have been occupied by the Islamic State, according to a senior administration official.

The plan, described as methodical and time-consuming, will not begin in earnest for several months and is designed to ensure that Iraqi forces­ do not overextend themselves before they are capable of taking and holding territory controlled by the militants.

It may also include U.S. advisers in the field with the Iraqis, should that be recommended by American military commanders, said the official, who updated reporters on administration strategy on the condition of anonymity under rules imposed by the White House. The advisers, the official said, would not participate in combat. President Obama has said repeatedly that no U.S. ground forces would be deployed to Iraq. […]