North Korea is using Ukraine as a test site for its nuclear-capable missiles, South Korea says

• North Korea is using Ukraine as a "test site" for nuclear-capable missiles, according to South Korea.
• South Korea's UN ambassador said that Russia used these missiles on December 30, and January 2 and 4.
• It has a "significant implication on global nuclear non-proliferation," Joonkook Hwang said.

North Korea is using Ukraine as a test site for its nuclear-capable missiles, South Korea's ambassador to the UN said in a statement on Thursday.