Russia in recent years has produced around 250 tanks and 150 aircraft annually, according to Mark Cancian, a senior adviser at the Center for Strategic and International Studies, a think tank in Washington. That means Ukrainian forces in two months have destroyed the equivalent of at least two years of Russian tank production…

For now, Russia’s invasion forces can resupply from enormous equipment reserves, so the depletion is unlikely to affect the war’s course quickly. Russia’s official equipment rosters include tens of thousands of military land vehicles. But many require maintenance or repair, and a large portion are likely not operative and can be used only for spare parts, say analysts who track Russia’s military. How many older vehicles can actually be deployed is unknown.

If the war drags on for months, consumption and destruction of Russian materiel, coupled with Western financial sanctions and export restrictions, will impede Moscow’s capacity to provision forces with better equipment, analysts say. Russian defense contractors will similarly struggle to meet demand from both Moscow and export customers, or to invest in research and the development of new products, say Western officials and analysts.