WASHINGTON (AP) — President Barack Obama will call on fellow world leaders next week to back a United Nations resolution calling on nations to stem the flow of foreign fighters joining terrorist organizations like the Islamic State, as the United States seeks to build legitimacy for its military campaign in Iraq and Syria, the White House said Friday.

At the annual U.N. General Assembly, Obama will also speak at a meeting about Ebola, chaired by U.N. Secretary-General Ban Ki-moon, where individual nations and the U.N. will announce new commitments to fight the outbreak in West Africa. Obama this week ordered 3,000 U.S. military personnel to the region to deal with the outbreak, and the U.S. is expecting other countries on Thursday to offer money, equipment and personnel, plus pledges to build treatment units for Ebola victims.