Khalifatul Masih ("Successor of the Messiah") sometimes simply referred to as Khalifah (the word is generally Latinised as Caliph from whence the word Caliphate is derived) is the elected spiritual leader of the worldwide Ahmadiyya Muslim Community and is the successor of Mirza Ghulam Ahmad of Qadian. The Khalifatul Masih is believed by the Ahmadiyya Community to be divinely guided, continuing the same divine communion which the founder, Mirza Ghulam Ahmad is said to have enjoyed. The Lahore Ahmadiyya Movement however does not subscribe to this belief. The Khalifatul Masih is also referred to by members of the Ahmadiyya Muslim Community as Amir al-Muminin (leader of the faithful). The current Khalifatul Masih is Mirza Masroor Ahmad.
After the death of Ghulam Ahmad, his successors directed the Ahmadiyya Community from Qadian which remained the headquarters of the community until 1947 with the creation of Pakistan. From this time on the headquarters remained in Rabwah, a land bought in Pakistan by the community. In 1984 the Ordinance XX was promulgated by the government of Pakistan which rendered the Khalifa unable to perform his duties and put the very institution of the Ahmadiyya Caliphate in jeopardy. Due to these circumstances the fourth Khalifah left Pakistan and migrated to London, England, provisionally changing the headquarters to the Fazl Mosque.