Two Russian submarines took part in an ICBM testing on Saturday morning, firing a missile each against targets in Kamchatka, in Russia’s Far East, and Archangelsk, in the country’s north, the Russian military said.

The launch probed the capabilities of Russia’s Bulava and Sineva projectiles. Both of the missiles are capable of carrying multiple nuclear warheads.

“The life-sized models of payloads completed the full launch cycle and successfully neutralized dummy targets” in Kamchatka and Archangelsk, the military said.

Sineva, a liquid fuel missile, is considered one of the most advanced missiles in Russia’s arsenal. In a 2008 exercise, Sineva set a record for the longest distance flown by a ballistic missile, after traveling more than 11,000 kilometers (6,853 miles).

Bulava is an even newer design, powered by solid fuel, and capable of carrying up to 10 warheads to distance of 8,000 kilometers. Each of the warheads would have an individual guidance system, allowing them to change trajectory mid-flight.

Earlier this week, the US and Russia clashed over a US testing of a ground-launched, intermediate-range missile. The updated version of Tomahawk cruise missile would be banned under the now-defunct INF treaty.

On Friday, Russian President Vladimir Putin said he had ordered the military to prepare a “symmetric response” to the US test.

However, it was not immediately clear if the Saturday ICBM test in Russia was connected with the earlier Tomahawk launch.

Also, the submarine launches come only weeks after a blast at a missile testing site in Archangelsk, which killed at least five nuclear engineers working on a “nuclear isotope power source” for a rocket. Last year, Vladimir Putin boasted that the world’s first nuclear-powered missile was being developed in Russia.

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