An updated regulation allowing China's coast guard to detain foreigners suspected of trespassing in waters it claims for up to 60 days took effect on Saturday, raising concerns in countries such as the Philippines that have sovereignty disputes with it.The new development is feared to further escalate tensions in the South China Sea, where Chinese and Philippine vessels often confront each other. The Chinese coast guard has fired water cannons at Philippine ships.China claims virtually the entire South China Sea, a vital shipping route and an area of rich fishing grounds. The Philippines, V…READ FULL ARTICLE