South Korea's biggest opposition party said Thursday that next week's summit between the United States and North Korea should be called off unless Pyongyang agrees to fully denuclearize."The most important thing is that CVID (complete, verifiable and irreversible denuclearization) must be achieved through next week's U.S.-North Korea summit, and if the North goes against it, it is rather reasonable to cancel the meeting right away," Liberty Korea Party Chairman Hong Joon Pyo told a press conference in Seoul.The United States and its allies like South Korea are calling for a process that wo…READ FULL ARTICLE