A pair of American B-52H bombers was escorted by two Japanese F-2 fighter aircraft and two South Korean KF-16 fighter jets during a trilateral flight on Friday.

Russian Foreign Minister Sergei Lavrov has started his three-day visit to North Korea as ties between the two heavily sanctioned nations continue to grow.The Russian minister and his North Korean counterpart Choe Son Hui started talks in the resort city of Wonsan on Saturday,

It was reported last week that North Korea plans to triple the number of troops fighting with Russia along the front lines in Ukraine—sending an additional 25,000-30,000 troops. Troops will arrive in the next few months, adding to the 11,000 North Korean troops that were sent in November.