Story highlights

• Peter Bergen says there are many ways to make progress in the fight against ISIS and a number of those aren't military in nature
• The anti-ISIS effort seems to be at a stalemate, he says

Peter Bergen is CNN's national security analyst, vice president at New America and a professor of practice at Arizona State University. He is the author of "Manhunt: The Ten-Year Search for bin Laden -- From 9/11 to Abbottabad."

(CNN) On Tuesday, President Obama meets in New York with world leaders to discuss how the campaign against ISIS is going and how it might be improved.

3. Amplify the work of former jihadists like the Canadian Mubin Shaikh, who intervenes directly with young people online who he sees are being recruited virtually by ISIS. 4. Support the work of clerics such as Imam Mohamed Magid of northern Virginia, who has personally convinced a number of American Muslims seduced by ISIS that what the group is doing is against Islam. 5. Keep up pressure on social media companies such as Twitter to enforce their own Terms of Use to take down any ISIS material that encourages violence. Earlier this year, Twitter quietly took down 2,000 accounts used by ISIS supporters, but the group continues to use Twitter and other social media platforms to propagate its message.

Obama vs. ISIS = stalemate?