after US President Donald Trump threatened to sink any boats that sought to leave or dock there. "The US increased military operations and took a targeted blockade action, which will only exacerbate tensions and undermine the already fragile ceasefire agreement and further jeopardise safety of passage through the Strait," Chinese foreign ministry spokesman Guo Jiakun told a news conference, adding "this is dangerous and irresponsible behaviour". (Bssnews)