1. CURRENT World Leaders

3. Britain's Prime Minister Gordon Brown, left, greets U.S. President Barack Obama as he arrives for the G20 summit in London, Thursday, April 2, 2009. Leaders of the world's rich and developing countries sought to dispel the clouds over the world's troubled economy -- and clear up divisions over how far to go with tougher financial regulation -- at a crisis summit Thursday in London.

6. Japan PrimeMinister Taro Aso

9. Germany’s Merkel and France’s Sarkozy and his wife with the Obamas

10. Spain’s José Luis RodríguezZapatero Mexico’s Felipe Calderón

11. Clockwise from top: Indian Prime Minister Manmohan Singh, British Prime Minister Gordon Brown, US President Barack Obama and Brazilian President LuizInacio Lula da Silva

12. U.S. President Barack Obama (R) and Iraq's Prime Minister Nuri al-Maliki

13. U.S. President Barack Obama apparently is a hit at his first major meeting with Italian Prime Minister Silvio Berlusconi, center, and Russian President Dmitry Medvedev. They were posing at the G20 Summit in London.

14. Russian President Dmitry Medvedev Ukraine's Prime Minister YuliaTymoshenko, right, congratulates VolodymyrLytvyn on his election as the speaker of parliament in Kiev, Ukraine, Tuesday, Dec. 9, 2008. Lytvyn later announced that lawmakers forged a three-party governing coalition made of up the president's, premier's and his parties.

17. World leaders, wearing traditional Peruvian ponchos, wave during the official group photo of 16th summit of the Asian Pacific Economic Cooperation, APEC, in Lima, Sunday, Nov. 23, 2008. Front row from left to right, Australia's Prime Minister Kevin Rudd, Brunei's Sultan HajiHassanalBolkiah, Canada's Prime Minister Stephen Harper, Chile's President Michelle Bachelet, China's President HuJintao, Peru's President Alan Garcia, Hong Kong's Chief Executive Donald Tsang, Indonesia's President SusiloBambangYudhoyono, Japan's Prime Minister Taro Aso, South Korea's President Lee Myung-bak, Philippines' President Gloria Macapagal Arroyo. Back row from left to right, Malaysia's Deputy Prime Minister NajibRazak, Mexico's President Felipe Calderon, New Zealand's Prime Minister John Key, Papua New Guinea's Prime Minister Michael Somare, Russia's President Dmitry Medvedev, Singapore's Prime Minister Lee HsienLoong, Taipei's former Vice President Lien Chan, Thailand's Prime Minister SomchaiWongsawat, US President George W. Bush, Vietnam's President Nguyen Minh Triet.

18. President Lee Myung-bak of South Korea looks around before the start of a meeting at the Asia Pacific Economic Cooperation Summit

19. Australia's Prime Minister Kevin Rudd