BBC:

North Korean leader Kim Jong-un has arrived in Russia for his first ever talks with Vladimir Putin.

The meeting in the Pacific port of Vladivostok comes soon after the collapse of the Trump-Kim talks in Hanoi.

The international stand-off over Pyongyang's nuclear programme is top of the list of issues to discuss, but both sides are bringing very different agendas to the table.

How much influence does Moscow have over North Korea?

The Soviet Union was a major ally of North Korea, offering economic co-operation, cultural exchanges and aid. It also provided North Korea with its initial nuclear know-how.

But since the collapse of the Iron Curtain the relationship has suffered. With weakened ideological ties there was no reason for special treatment and support. And as a regular trading partner, North Korea was not very attractive to Russia, as it was unable to pay international market prices.

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