WASHINGTON/BEIJING (Reuters) - Beijing demanded an end to U.S. surveillance near China on Thursday after two of its fighter jets carried out what the Pentagon said was an “unsafe” intercept of a U.S. military reconnaissance aircraft over the South China Sea. A Chinese J-11 fighter jet is seen flying near a U.S. Navy P-8 Poseidon about 215 km (135 miles) east of China's Hainan Island in this U.S. D