Outdated Tanks and Training: Challenges for Ukraine and Russia in Modern Warfare.

Russia has sent 70-year-old T-55 tanks to Ukraine without upgrading them, which are hopelessly obsolete compared to even the oldest tank in the Ukrainian inventory. The mismatch could have profound implications in the coming weeks and months, as Ukraine moves to seize the initiative with its own, long-planned offensive. The T-55s really are 1950s technology, and there’s no evidence the Russians have added blocks of explosive reactive armor in order to reinforce the T-55’s original—and thin—steel armor.