Allies have developed hand held shaped-charge anti-tank weapons
for infantry. Most armored vehicles
fall easy prey to the new weapons.
Pundits herald the end of tanks
due to the advent of cheap,
effective anti-tank weapons.
Heavy armor on new heavy tanks can defeat hand held AT weapons. Thin-skinned vehicles are still easy targets for AT weapons so tanks get progressively heavier and heavier to lead 2D maneuvers in the Cold War period after WWII.