Gretchen Peters and Habibullah Khan Report: A senior al Qaeda commander allegedly tied to the London airplane bomb plot has been arrested in Pakistan, Pakistani intelligence and law enforcement officials have told ABC News. Matiur Rehman, one of the most wanted men in Pakistan, is known to have met with the alleged plot ringleader Rashid Rauf, according to the officials. Rehman’s capture could provide the most important leads in months to the whereabouts of Al Qaeda’s top two leaders, Osama bin Laden and Ayman al Zawahiri. Rehman was believed to be in frequent contact with Zawahiri. Rehman was taken into...