Ukraine on Saturday claimed a pair of attacks on oil depots in western Russia, the latest salvo in Kyiv's air campaign against strategic targets on Russian soil. Kyiv's General Staff said its forces had struck storage facilities overnight in the Kaluga and Tula regions.

While the ground war in eastern Ukraine has settled into a grinding war of attrition, where Russian forces sacrifice hundreds, sometimes thousands, of troops a day, for small, incremental advances, the air war has the two sides inflicting significant losses on each other’s energy sector.

Tanks — 9,803 (no change) units, ・Armored combat vehicles — 20,394 (+13) units, ・Artillery systems — 22,040 (+21) units, ・Multiple launch rocket systems — 1,262 (no change) units, ・Air defense systems — 1,

Russian President Vladimir Putin and Iranian President Masoud Pezeshkian signed a comprehensive strategic partnership agreement in Moscow on Friday (January 17), involving closer defense cooperation that is likely to worry the West.