The Council met for two hours behind closed doors as Kurds captured the contested oil city of Kirkuk and the United States contemplated air strikes to bolster Iraq's collapsing army.
The 15 members expressed unanimous support for the government and people of Iraq in their fight against terrorism and called for broad-based dialogue, said rotating president Russia.
"This is a great opportunity for a fresh start in having an all-inclusive political dialogue and also in resolving the multitude of issues," Russian ambassador Vitaly Churkin said.
Security Council members urged the Iraqi government and the international community to support the UN mission on the ground, especially in response to the humanitarian crisis, Churkin said.
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He said members condemned "all terrorist and extremist activities" but warned that Iraq had to address much deeper and more complex political, sectarian, social and oil disputes.
"The more immediate thing is to reach some kind of accommodation between the main political forces to make it easier for them all to fight the terrorists," he added.
Although jihadists have swept south from the northern city of Mosul to Saddam Hussein's hometown of Tikrit, Churkin said the UN envoy to Iraq, Nickolay Mladenov, did not see an immediate danger of the violence spreading to Baghdad.
Diplomats said Mladenov briefed by video link that the UN mission had only a "very limited" ability to respond to the humanitarian needs of more than 5,00,000 displaced from Mosul.