The Russian military held missile drills with units in Siberia that included the test-firing of an ICBM.

The Defense Ministry said in a statement a Topol ICBM was sent aloft from the Kapustin Yar launch site in southwestern Russia. It’s practice warhead successfully struck a designated target at the Sary-Shagan range in neighboring Kazakstan, with whom Moscow has close economic and military ties.

Separately, the ministry also note that the military kicked off large-scale maneuvers in Siberia that involved the Yars missile launchers and their support vehicles. The ministry noted that 4,000 Russian troops are involved in the drills.

The Yars system features Russia’s most-advanced nuclear-tipped ICBMs. They are mobile, mounted on a heavy truck, which makes them extremely difficult to locate and destroy.

The Kremlin said the exercises will involve deploying the missiles and actions aimed at protecting them from enemy observation and precision strikes.

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