However, Hammond, who chaired a meeting of the government's emergency security committee, said he does not envisage a combat role for British troops in Iraq.
With media replete with stories of suffering and atrocities, Britain's government is being called to account.
The Daily Mail newspaper featured a photograph of the prime minister while on vacation, walking barefoot down a beach under the headline: "Now UK must join bomb raids on fanatics, say MPs."
The ambassadors of the EU's 28-member nations plan an emergency meeting on the security situation in Iraq, Gaza and Ukraine tomorrow.
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EU foreign policy chief Catherine Ashton could call a meeting of higher-level officials if a majority of the ambassadors request it. However, no such decision is expected, an EU official said today, speaking on condition of anonymity because of the sensitivity of the issue.
British cargo planes carrying drinking water and tents have dropped some emergency supplies to the Yazidi community, a minority group besieged by Islamic militants in the Sinjar mountains in northern Iraq. But the efforts stalled in the past day because crew members were unable to find a place to drop supplies amid a crush of desperate people.