President Obama has launched an effort to rally Congress and the public behind a sustained offensive against the militant group Islamic State. Obama is set to meet with Congress on Tuesday followed by a national address the following day. He discussed the plan Sunday on NBC’s Meet the Press.

President Obama: “We’re not looking at sending in 100,000 American troops. We are going to be, as part of an international coalition, carrying out airstrikes in support of work on the ground by Iraqi troops, Kurdish troops. We are going to be helping to put together a plan for them so that they can start retaking territory that ISIL had taken over. What I want people to understand, though, is that over the course of months we are going to be able to not just blunt the momentum of ISIL, we are going to systematically degrade their capabilities, we’re going shrink the territory that they control, and ultimately we’re going to defeat them.”

The United States says it will lead the offensive against the Islamic State with a so-called “core coalition” of 10 countries. The White House says the fight could last beyond the end of Obama’s term in early 2017. The news follows a month of U.S. bombing attacks against ISIL fighters in Iraq. Over the weekend, American warplanes expanded the offensive with strikes against militants near the Haditha Dam.