I'm with you Caz. I've been in blocs, the thinking process they're describing is not how blocs should operate. If anyone stands by that kind of statement their political capital will be burned to a crisp even if they manage to pull off a win. There's no reason to sign a Mutual defense treaty if it is now optional when direct attacks are made. A mutual defense pact recognizes an attack on your treaty partner as an attack on yourself meant to be met by your own military might.