An Afghan suicide bomber struck a wedding on Saturday, killing 23, including a prominent ethnic Uzbek M.P. Under the guise of being a guest, the attacker embraced M.P. Ahmad Khan Samangani, before setting off the explosives. The wedding was for Samangani’s daughter, and there were about 100 people in the hall for the party. Samangani was a supporter of Afghan President Hamid Karzai and a rival of Gen. Abdul Rashid Dostum, one of the Uzbek region’s most powerful politicians. A Taliban spokesman denied being responsible for the attack, and Karzai has appointed a team to investigate the attack.