who benefits? (AP)Masked gunmen shot to death a Sunni cleric Tuesday in the second such attack against a member of the influential Association of Muslim Scholars, which has called for a boycott of the national elections. The cleric, Sheik Ghalib Ali al-Zuhairi, was killed as he left a mosque after dawn prayers in the town of Muqdadiyah, 60 miles north of Baghdad, police said. His assassination occurred a day after another prominent Sunni cleric was killed in the northern city of Mosul — Sheik Faidh Mohamed Amin al-Faidhi, who was the brother of the association's spokesman. It was unclear whether the two attacks were related.