In a statement today, a spokesperson for Ashton said the extraordinary meeting would "focus on the EU's response to major ongoing crises, focusing on Iraq and Ukraine."
The ministerial talks follows a meeting of EU ambassadors yesterday in which member states began to coordinate ways to help an Iraqi government under siege by Islamic State fighters who control much of the country.
Some countries are reluctant to provide weapons to a conflict zone on principle, but in what one EU source called a major breakthrough, none of the the bloc's envoys present yesterday voiced opposition to the call for arms by France, Italy and Britain.
Following in the UK's footsteps, President Francois Hollande today said France would provide weapons to Iraqi forces fighting the Islamic State militants.
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Britain had said it would transport military supplies to Kurdish forces battling the militants amid Western fears the crisis could spread throughout the region.
The ambassadors unanimously agreed on the need for urgent and increased humanitarian support but fell short of convening foreign ministers, who have the authority to engage major coordinated action by bloc countries.
Yesterday, the European Commission boosted aid to Iraq to 17 million euros (USD 23 million), but said the real challenge was access to besieged civilians not the lack of humanitarian funding.
The US, which has been carrying out air strikes against jihadist positions, said today it was assessing rescue options for the hundreds of thousands of civilians trapped on Mount Sinjar while the UN warned of "potential genocide".