Turkish President Recep Tayyip Erdogan told refugees at a camp in Gaziantep province that aerial bombardments alone may not be enough to stop the Islamic State and called for the support of rebels who are fighting the group in Syria.
Just days ago, Turkey said it wouldn't let Kobani fall. On Thursday, Turkish lawmakers gave authorization for the country's military, one of the region's strongest, to push into neighboring Syria and Iraq.
The secular Kurds and extremist Islamic State militants are archenemies. The Syrian Kurdish militia, known as the Popular Protection Units, has been one of the most effective forces against a host of extremist rebel factions in Syria.
Both sides seek to maintain control of the strategic border crossing into Turkey.
Separately, officials said that American and Belgian forces used attack aircraft and armed drones to conduct four airstrikes against the Islamic State in neighboring Iraq, where the U.S.-led campaign against the militants began on Aug. 8.
The U.S. Air Force and Navy have dropped more than 1,140 munitions on the militants since the air campaign started.
The Associated Press, Times staff writer Patrick J. McDonnell in Beirut and special correspondent Nabih Bulos in Mursitpinar, Turkey contributed to this report.