On 3 August 2015, following the death of Taliban founder Mohammed Omar and the ascension of Mullah Akhtar Mansour, Agha resigned as head of the Taliban political office in Doha, Qatar which he served from 2009. He stated he was stepping down to avoid "expected future disputes" while also questioning the legitimacy of the newly appointed leader of the Taliban, Mullah Akhtar Mansour.[4] He was succeeded by Sher Mohammad Abbas Stanekzai, a former anti-Soviet fighter.[5]