President Obama talks to the world on Wednesday.
The president makes his annual address to the United Nations General Assembly, a speech likely to touch on U.S.-led airstrikes in Syria and Iraq as well as issues like climate change, the spread of the Ebola virus, and counter-terrorism in general.
Other likely topics: Russian aggression in eastern Ukraine and the winding down of the war in Afghanistan.
Hours after his address, slated for shortly after 10 a.m., Obama will chair a special meeting of the U.N. Security Council devoted to the problem of foreign terrorist fighters.
The United States is pushing for a UN resolution demanding that countries crack down on the movements of these fighters across international borders.
Late in the afternoon, Obama attends a meeting of an organization called the Open Government Partnership.
The U.S. president also has a string of UN-related meetings on his Wednesday schedule.
They include a session with Haider al-Abadi, the new prime minister of Iraq.
Obama also meets with Sam Kutesa, president of the United Nations General Assembly, and United Nations Secretary-General Ban Ki-moon.