SEOUL, September 13. /TASS/. South Korean Foreign Minister, Yun Byung-se, will hold talks over the phone on Tuesday with his Russian and Chinese counterparts Sergey Lavrov and Wang Yi, the ministry’s spokesman told a press briefing in Seoul on Tuesday.

According to the diplomat, the ministers are planning to assess the nuclear test conducted by North Korea recently and discuss the possible retaliatory actions.

North Korea carried out its fifth nuclear test on September 9. The South Korean Defense Ministry has said that it is the most powerful nuclear device North Korea has tested so far. Its yield is estimated at about 10 kilotonnes. Prior to that, North Korea conducted four nuclear tests - in 2006, 2009, 2013 and January 2016.