For the third straight day, protesters in Islamabad demanded the current government step down and be replaced by a caretaker regime until elections are held. The protests are being led by Tahir ul-Qadri.
Pakistani troops have ended a siege by militants who attacked a naval base in the city of Karachi. The Pakistani Taliban says the raid was to avenge Osama Bin Laden's killing by US special forces on May 2. Madiha Tahir reports from Karachi.
Islamic militants attacked a Pakistani airbase early today. The base is believed to house nuclear weapons. Anchor Marco Werman gets details and analysis from Blake Hounshell, managing editor of Foreign Policy magazine.