Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
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(CNN) – President Obama laid out the partial playbook for weakening ISIS and diminishing the group's global appeal Friday.
"You systemically degrade their capabilities. You narrow their scope of action. You slowly shrink the space, the territory, that they may control. You take out their leadership. And, over time, they are not able to conduct the same kinds of terrorist attacks as they once could," Obama said.
But even if the U.S. manages to take out a top terror leader, isn't there always someone in line ready and willing to step in and pick up where the previous mastermind left off?
Director of the Center for the Study of Terrorist Radicalization Daveed Gartenstein-Ross joins CNN's "The Lead with Jake Tapper" to discuss.