Lots of upgrades make this a deadly weapon of war.
UK considering supplying Ukraine with Challenger 2 tanks to fight Russian forces, World News
German indecision on Leopard 2 tanks a 'disappointment,' Ukraine's deputy foreign minister says
Czech Republic wants to piggyback on German Leopard 2A8 tank buy
Canada donates four Leopard 2 battle tanks to Ukraine - The Globe and Mail
US and Germany prepare to send tanks to Ukraine
Spain planning to send four to six Leopard tanks to Ukraine, International
What is a 'main battle tank,' and how will Ukraine use them? - Breaking Defense
What the Leopard 2 tank could mean for Ukraine's fight against Russia
Explainer: West mulls sending German Leopard 2 tanks to Ukraine
Why top U.S. officials don't want to give Ukraine tanks
German and U.S. Tanks Will Be Critical in Ukraine's Next Phase Against Russia