Top U.S. commanders and diplomats are due to meet on February 23 for talks about the battle against Islamic State militants.
New U.S. Defense Secretary Ashton Carter will oversee the gathering at a U.S. Army camp in Kuwait.
Among the long list of participants are General Lloyd Austin, the head of U.S. forces in the Middle East, and retired General John Allen, U.S. President Barack Obama's envoy to the anti-Islamic State coalition.
Washington's ambassadors to Egypt, Jordan, Kuwait, Saudi Arabia, and the United Arab Emirates are also scheduled to attend.
The meeting comes amid rising concern about the spread of IS, with Libya emerging as a battleground for militants loyal to Islamic State.
IS militants took control of large parts of northern Syria and western Iraq early last year.