Putin during the call on Tuesday praised the “bravery, heroism and self-sacrificing spirit” displayed by North Korean troops as they fought with Russian forces to repel a Ukrainian incursion into Russia’s Kursk border region,

Kim Jong Un provides Moscow with artillery, missiles - and as a BBC investigation shows, labourers working in 'slave-like' condition.

North Korea’s leader, who’s providing the Russians with millions of badly needed artillery shells and other equipment as well as thousands of troops,