All parties involved in the Korean Peninsula nuclear issue should exercise restraint and not speak or behave in away that escalates tensions, Foreign Ministry spokesman Geng Shuang said at a regular news conference in Beijing on Wednesday.

Tensions have soared this week after the Democratic People's Republic of Korea declared that it had successfully launched an intercontinental ballistic missile earlier on Tuesday.

Less than 24 hours afterward, armed forces of the Republic of Korea and the United States launched short-range ballistic missiles of their own from the peninsula into the Sea of Japan on Wednesday.