Rpg-7 insta kills.
Not always sadly but it happens often because they tend to hit the rear / side armor of the tanks.
Also dear Putin,

I'm wondering why nobody has built a tank with 2 main guns yet.
Also Kids : Never use the mentally handicapped Command jeeps. They have no goddamn armor and a random artillery hit will certainly destroy them ( Unless it's Mortar or the loving horrible BM21 Grad / RM30).