Pakistan on Sunday sent its top diplomat to offer further assistance to Afghanistan's efforts to reach a deal with Taliban to end 12 years of war.
Foreign affairs adviser Sartaj Aziz held talks with Afghan Foreign Minister Zalmai Rassoul and met Karzai to deliver in person the invitation from new Prime Minister Nawaz Sharif -- already extended twice by telephone.
On Monday the president's office said Karzai accepted the invitation "in principle".
