Beijing offers cash rewards to unearth foreign spies

China's capital is stepping up a campaign against foreign espionage from Monday, offering rewards ranging from $1,500 to $73,000 to citizens who blow the whistle on suspected spies, state media said.Since taking office in 2013, President Xi Jinping has overseen a raft of laws and campaigns to secure China's national security against both domestic and foreign threats.The "pressing" need for new measures to guard against foreign spies is an unfortunate side-effect of China's reform and opening up