you seem lost, so i'll explain:

the governments they overthrew were compradors selling out their own people for some scraps from their french neocolonial overlords. the lands of niger, mali, and burkina faso are rich in gold, uranium, oil, and diamonds, and yet the people have lived like slaves. force was clearly justified if the previous governments were unwilling to cede power peacefully. they were suspended from ecowas at the obvious behest of france and the u.s., countries notable for their willingness (and outright glee) in using or abetting violence to effect regime change whenever it suits their own interests. let's not pretend that the suspension was because of the coups, it was because the coup leaders are not obedient dogs of the empire.

the win here is that they're formalizing and solidifying an alliance against western imperialist theft of their natural resources and labor.