U.S. Global AIDS Coordinator Ambassador Deborah Birx, U.S. Ambassador to the United Kingdom Matthew Barzun, singer Elton John, his partner David Furnish and the Ambassador's wife Brooke Brown Barzun (L-R) pose for a photo during a reception at The U.S. Ambassador's London residence, Britain, November 4, 2015. The reception celebrated the launch of the Elton John AIDS Foundation and the U.S. President's Emergency Plan for AIDS Relief $10 million partnership to provide grants to organisations working to meet the HIV-related needs of Lesbian, Gay, Bisexual and Transgender people. REUTERS/Suzanne Plunkett