"The scale of deployed North Korean troops is being closely watched," Yoon Yeocheol, South Korea's ambassador to the U.K., told Newsweek.

Yoon Suk Yeol, attending the G20 summit, advocates for the resumption of negotiations between his country and Mercosur

On the one hand, the deployment of the North Korean troops seems a logical follow-up to the mutual defense treaty signed by Kim Jong-un and Vladimir Putin in Pyongyang in June. On the other hand, it raises a series of important questions.