North Korea is stepping up criticism of South Korea's new President Lee Jae Myung as he prepares for his first summit with U.S President Donald Trump, calling Lee's efforts to engage with Pyongyang a "pipedream".

Captured during the Korean War and imprisoned for decades for refusing to renounce his communist beliefs, 95-year-old Ahn Hak-sop now has a single dying wish: to return to North Korea and be buried alongside his comrades.

Kim Yo Jong, sister of North Korea's leader Kim Jong Un, arrives at the Vostochny Сosmodrome before a meeting of Russia's President Vladimir Putin with North Korea's leader Kim Jong Un, in the far eastern Amur region,