From The War Room

The Yerushalmi (Peah 1:1) says, wars are lost due to

Loshon Hora

Bavli (Erechin 15b) says, the tikun for

Loshon Hora

Is learning Torah

It (Makkos 10a) also says

Learning Torah gives strength in battle

Rashi in Divrei Hayamim (2:17) says

Learning Torah dissuades enemies from attacking

Clear enough?

Shavua Tov Yidden