NBC News — President Obama landed early monday morning in the Mexican city of Los Cabos where he will participate in the G-20 summit. Leaders of the world's largest economies began to assemble sunday at a Baja California desert resort.

Europe's ongoing financial crisis is expected to top discussions and already President Obama is downplaying expectations for the summit. The president is seeking bolder, swifter signals from Europe that it will contain its financial mess and keep it from torpedoing the U.S. economy.