A timeline of the complicated relations between Russia and North Korea

– North Korean leader Kim Jong Un is visiting Russia for a meeting with President Vladimir Putin, marking their second meeting.

The agenda for the meeting has not been confirmed 

– but there is speculation that Putin may request artillery and ammunition for the war in Ukraine.

– This potential request would reverse roles from the 1950-53 Korean War when the Soviet Union supported North Korea's invasion of the South.

– The relations between Russia and North Korea have had several ups and downs over the years.

Key events in their history include the division of the Korean Peninsula after World War II, 

– the Korean War, Soviet assistance to North Korea, and the decline of Soviet support after the Cold War.

– In the 1990s, the collapse of the Soviet Union severely impacted North Korea's economy, leading to a devastating famine.

– In the early 2000s, Vladimir Putin sought to restore Russia's ties with North Korea.