K2 Black Panther: The Most Expensive Tank in the World

But is the cost worth it in lethality? 

40mm or 90mm, or maybe even 105mm

Courtney Coulston

Lục quân Hàn Quốc - Wikiwand

Here's South Korea's K2 Black Panther, The Most Expensive Tank in

Courtney Coulston

The Buzz, Page 1072

韓國K2黑豹戰車將逐批改用自製柴油引擎- 軍事- 中時新聞網

Here's South Korea's K2 Black Panther, The Most Expensive Tank in

Lục quân Hàn Quốc – Wikipedia tiếng Việt