Turkey said it would allow Iraqi Kurds passage to Syria, and the U.S. dropped weapons and aid to Kobane, where Kurdish fighters have been battling the Islamic State.
The Syrian town along the Turkish border has become, for now, the epicenter of the fight.
Sixty countries are participating to some degree, and the question now is whether they will be able to agree.
Saudi officials were investigating the shooting as a workplace dispute and not terrorism.
The country will also allow its territory to be used as part of training efforts for Syrian opposition fighters.
The world must “do something” to prevent a possible massacre of thousands in the Syrian town by the Islamic State, he said.
“They want the U.S. to come in and take care of the problem,” a senior official said, but the Pentagon has said U.S. strikes alone can’t drive the Islamic State from Kobane, on Turkey’s border.
The operation in Iraq’s second most populous city marks an escalation in the campaign against the militants.
Obama administration officials wrestle with whether to call it ‘war’ or something else
The measure sent would allow soldiers to establish safe zones for those fleeing the Islamic State fight.