Bad Fences, Bad Neighbors

Hours after a suicide bomber blew himself up in the middle of a convoy carrying Afghan Senate leader Sibghatullah Mujaddedi in Kabul last week, killing four other people, the politician appeared on television to lay blamenot on al-Qaeda or a resurgent Taliban, but on the President of neighboring Pakistan. "Pervez Musharraf, a dishonorable person, ordered the attack," Mujaddedi thundered, an accusation that Pakistan's Foreign Ministry called "baseless."

Afghanistan is suffering a growing number of suicide bombings. Leaders, including President Hamid Karzai, say the Musharraf government is not doing enough to stop militants from its side of the...