Afghanistan's President Ashraf Ghani (L) and Afghanistan's Chief Executive Abdullah Abdullah (R) participate in a family photo at the NATO Summit in Warsaw, Poland July 8, 2016. (Photo: Agencies)

Afghanistan's President Mohammad Ashraf Ghani and his rival Abdullah Abdullah who also claimed victory in the presidential election, inked an agreement on Sunday to end a political deadlock, Presidential spokesman Sediq Sediqqi said on Twitter.