FILE - In this Thursday, Nov. 11, 2010 file photo, protesters gather to denounce the G-20 Summit. Since 2010, the G-20 has issued two-year action plans on anti-corruption efforts, and a report on what has been achieved under the last plan is expected at this weekend's summit. The leaders will also issue a new plan for 2015-16, which is expected to include commitments on issues such as foreign bribery, stolen asset recovery and whistleblower protection, said A.J. Brown, a director with Transparency International Australia. (AP Photo/Wally Santana, File) (The Associated Press)
BRISBANE, Australia – Corruption is a perennial topic for the G-20, with leaders dubbing it a threat to global growth, and activists arguing it hurts the poorest countries the most by siphoning away desperately needed money that could be used to improve health systems, schools and roads.