Laura Stefan, the anti corruption coordinator for the Romanian Academic Society, from left, Colombia President Juan Manuel Santos, Sri Lanka President Maithripala Sirisena and business man Strive Masiyiwa take part in a panel discussion at the Anti-Corruption Summit in London, Thursday, May 12, 2016. David Cameron has gathered leaders, civil-society groups and representatives of banks and financial institutions at Thursday's conference with the goal of producing a strong global declaration against financial wrongdoing. (AP Photo/Frank Augstein, Pool)