CNN

A group of Russian Navy ships, including a nuclear-powered submarine, arrived in Cuba on Wednesday morning in a sign of strengthening ties between the two Cold War allies.

Russian frigate Admiral Gorshkov – the first of a four-ship convoy – fired a 21-gun salute after entering Havana harbor, which was answered by the Cubans with cannon fire from an 18th-century colonial fort built by the Spanish to guard the port.

The Gorshkov is one of the Russian Navy’s most modern ships, and was followed by the nuclear-powered submarine Kazan, a rescue tug, and an oil tanker.

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