Ukraine intelligence confirms Russia enhanced North Korean missiles to deadly accuracy while Pyongyang supplies troops and weapons, raising nuclear concerns.

“North Korea has never been as strong – strong militarily as well as strong in oppressing its civilian population – as it is right now,” said Joanna Hosaniak, deputy director general of the Citizens’ Alliance for North Korean Human Rights.

Russian Railways said it had agreed with North Korea's railways ministry to resume a twice-monthly service between the two capitals on June 17, a journey it said took eight days and which, at over 10,000 km (6,213 miles), was the longest direct rail journey in the world.

North Koreans are "not interested" in entering the country, according to a commentary published by state media.

THE HAGUE, Netherlands - North Korea appears to be expanding its nuclear program through the addition of a purpose-built enrichment facility, satellite images show. The blue-roofed building, 93 meters long and 28 meters wide,

South Korea's foreign ministry emphasised its efforts to reopen communication with Pyongyang to ease tensions, without directly commenting on Trump's letter South Korea's Ministry of Foreign Affairs said on Thursday it is working closely with the United States to revive dialogue with North Korea,

China has traditionally viewed North Korea as a security buffer and an ideologically aligned neighbor it can dominate.