Most Powerful Tanks

https://www.trendrr.net/27692/best-modern-tanks-world-famous-advanced-powerful/

http://www.military-today.com/tanks/top_10_main_battle_tanks.htm

https://www.army-technology.com/features/feature-the-worlds-top-10-main-battle-tanks/

https://www.iwm.org.uk/history/how-britain-invented-the-tank-in-the-first-world-war

http://www.military-today.com/tanks/m1a2_sep.htm

https://en.wikipedia.org/wiki/List_of_main_battle_tanks_by_country
https://www.armyrecognition.com/united_states_army_heavy_armoured_vehicles_tank_uk/m1a2_sep_main_battle_tank_technical_data_sheet_specifications_pictures_video_11610154.html

https://en.wikipedia.org/wiki/Challenger_2#Protection

https://en.wikipedia.org/wiki/T-90#Armament

http://www.bbc.com/news/world-europe-40083641

http://www.military-today.com/tanks/leclerc.htm

https://www.army-technology.com/projects/leopard-2-a7-main-battle-tank/