A military band performs as an honour guard marches by during the welcome ceremony for the visiting Pope Francis (unseen) at the UAE presidential palace in the capital Abu Dhabi on February 4, 2019. - Pope Francis arrived in the UAE on February 3, the first ever papal visit to the Arabian Peninsula, birthplace of Islam, where he will meet leading Muslim clerics and hold an open-air mass for some 135,000 Catholics. (Photo by Vincenzo PINTO / AFP)