Russia's President Vladimir Putin marks the fifth anniversary of Moscow's annexation of Crimea from Ukraine with a visit to the Black Sea peninsula on Monday.

Putin attended the launch of new power plants in Crimea, part of Moscow's efforts to upgrade the region's infrastructure. Ukraine cut off energy supplies to the peninsula and blocked shipments of Crimea-bound cargo via its territory after Moscow annexed the region in 2014.

Al Jazeera's Charlie Angela reports.

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