(Bloomberg) -- As Gulf oil wealth flows to all corners of the globe — backing mega mergers, propping up economies and upending the world of sport — moves by a key member of Abu Dhabi’s ruling family have positioned him as one of the world’s most influential dealmakers.Most Read from BloombergHuawei Teardown Shows Chip Breakthrough in Blow to US SanctionsWhy China Is Avoiding Using ‘Bazooka’ to Spur EconomyMercedes Bets on Range Boost in Swipe at Tesla’s EV LeadDiamond Prices Are in Free Fall in