This is not good on so many different levels.

They came to celebrate. Minutes later, 70 were dead and Kurdistan was in turmoil
Suicide bombs at party offices drag region into heart of insurgency

At the offices of the region's two main political groups, the Kurdistan Democratic party and its rival the Patriotic Union of Kurdistan, celebrations were also in full swing. But the seasonal greetings being exchanged between hundreds of party faithful and other well-wishers were about to be shattered. Shortly before 11am two men, apparently wearing Kurdish dress, suicide belts wrapped around their waist, slipped past the normally tight security at the party buildings to deliver their own Eid message. In explosions that appeared to be carefully synchronised, they killed at least 70 people and injured more than 200 .

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Juan Cole has some comments...

At least 56 dead, over 200 Wounded in Irbil Blasts

When I think "suicide bomber" and "Kurdistan", I think Ansar al-Islam, the small, shadowy Kurdish radical group, some members of which have ties to al-Qaeda. They desire to punish the two major Kurdish parties for supporting the US presence in Iraq, and to take revenge for the destruction of their headquarters and their marginalization in Kurdistan. Close observers of Kurdistan were speculating that the incident, which killed a number of important Kurdish politicians, would bring the two main parties closer together; and might stiffen their insistence on greater autonomy within Iraq.

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