President Trump was in the process of developing diplomatic relations with North Korea. Trump opened up the possibility for a historic reduction of tensions and a possible nuclear deal with Pyongyang.
Too bad Brandon has no interest in this.
https://www.cbc.ca/news/world/trump-korea-dmz-kim-jong-un-1.5195698
Russians have always been like this, it is why we were having to fight Russians during the Korean War and the Vietnam War.