Media reports say that Ukraine will receive 12 Challenger 2 tanks, with the first four combat vehicles being handed over immediately.
U.S. will supply M1 tanks to Ukraine, Germany approves Leopards - The Washington Post
When will the AFU receive British Challenger 2 tanks?
Should Germany send Leopard 2 tanks to Ukraine?
US and Germany could unveil plans to send tanks to Ukraine as soon as today, World News
U.S., Germany set to send tanks to Ukraine - Washington Times
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Ukraine gets its tanks: Poland sending Leopard 2, and other nations may follow - Breaking Defense
UK Offer of Challenger Tanks May Prod Germany to Lift Veto on Leopards for Ukraine
Great Britain may supply Ukraine with Challenger 2 tanks – SkyNews - Militarnyi
UK denies Challenger 2 gift to Ukraine reduces operational capabilities by nearly a third - Breaking Defense