TEL AVIV — The International Institute for Strategic Studies (IISS), where White House National Security Adviser H.R. McMaster has been listed as a member for 11 years, quietly took in about $32.5 million in funding from Bahrain, a country whose constitution explicitly enshrines Sharia Islamic law as the governing doctrine. The funding from Bahrain, a repressive regime with a dismal human rights track record but also an important regional U.S. ally, reportedly amounted to one quarter of the think tank’s total income. A significant portion of this funding reportedly pays for the think tank’s annual conference in Bahrain, the Mamana...