Map locating Iran's known nuclear sites. Major world powers were meeting in Brussels to discuss Iran's rejection of an international nuclear fuel deal, after US President Barack Obama warned Tehran must face the consequences. Source: AFP Graphics

Map locating Iran's known nuclear sites. Major world powers were meeting in Brussels to discuss Iran's rejection of an international nuclear fuel deal, after US President Barack Obama warned Tehran must face the consequences. Source: AFP Graphics

BRUSSELS: Six world powers are meeting in Brussels to discuss possible measures against Tehran for its refusal to halt nuclear enrichment activities.

The EU said senior diplomats from the U.N. Security Council's five permanent members plus Germany are taking part in Friday's meeting.

President Barack Obama said Thursday the six nations dealing with Iran's nuclear program will develop a package of serious new punitive measures in coming weeks.

On Wednesday, Tehran announced it would not export its enriched uranium for further processing, effectively rejecting the latest plan brokered by the International Atomic Energy Agency and aimed at delaying Iran's ability to build a nuclear weapon.