Laura Stefan, the anti corruption coordinator for the Romanian Academic Society, from left, Colombia President Juan Manuel Santos and Sri Lanka President Maithripala Sirisena 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)