TOPSHOTS US President Barack Obama and Chinese President Xi Jinping head for their bilateral meeting at the Annenberg Retreat at Sunnylands in Rancho Mirage, California, on June 7, 2013. Ditching the crushing formality of US-China summits, Xi and Obama met in Rancho Mirage, California, a playground of past presidents and the powerful. Allegations of Chinese cyber hacking and espionage, North Korea's nuclear defiance and constant trade niggles between the world's two single largest economies and possible future superpower rivals will dominate the talks. AFP PHOTO/Jewel Samad