If the war is not winnable or if the expected costs outweigh the benefits, the deciding actors (assuming they are rational) may never go to war (a decision) but rather explore other alternatives.
A fal akinnas war ti taha tarna meɣ a fal alqim tan net ojjaran alfayda tan net, kel tarna war ilkem ad iknasan (abbara) mucham ad ariman badil tan tiyyad