At Tuesday’s presidential news conference, Afghanistan was never mentioned — but the war there ravages on. Earlier this morning in Qandahar, a suicide bomber blew himself up killing at least 20 and wounding dozens. The attack came at a mosque that was holding a memorial service for a leading cleric who was assassinated last week. The cleric was an ally of President Hamid Karzai and a vocal critic of the Taliban. On Monday a roadside bomb in Kabul killed seven Afghans — the target of the bomb was a passing NATO convoy. And on Sunday, clashes between the Taliban and Afghan forces killed as many as 18.