They have invited their external enemies in to take over but avoid all the dirty and bloody unpleasantness of a fighting war. It makes little sense for them to talk of mutual defense now, when the enemy is already dispersed throughout their countries.
Exactly; France and Germany have seen their last conventional war. At this point, the foreigners inside their borders would resist any deployments in the Third World (not just for themselves, but for their adopted - invaded - countries).