Long before the Kerch Strait incident in October 2018, Russia had already begun to strengthen the forces in its Southern Military District, which spans from near Volgograd to Russia’s border with Georgia and Azerbaijan. Naturally, that has caused concern in Kyiv, since the district also abuts the restive eastern Ukrainian region of Donbas and is responsible for Crimea, which Russia annexed from Ukraine in 2014. One of Ukraine’s biggest worries has been Russia’s reactivation of the 150th Motorized Rifle Division in late 2016. Posted only 50 km from the border between Russia and Ukraine, it is equipped with an unusually large number of tanks. Its force structure includes two tank regiments, rather than the standard one; and each of its two motorized rifle regiments has an attached tank battalion. Russian media refers to the division as the “steel monster.”

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