The US has stepped up its efforts to find a way out of the diplomatic impasse over North Korea, with President Barack Obama speaking to President Hu Jintao of China and Hillary Clinton, US secretary of state, hosting her opposite numbers from South Korea and Japan.
美国已加大解决朝鲜问题上外交僵局的努力。美国总统巴拉克•奥巴马(Barack Obama)打电话给manbetx3.0 国家主席胡锦涛，而美国国务卿希拉里•克林顿(Hillary Clinton)