Are there any restrictions on when you can offer to join a defensive holy war? I'm currently playing an Emir based in Iberia. I've already joined in the defense of several other Iberian emirs who were fighting of Christian attackers. But for an unknown reason, I was unable to join in the two latest wars, resulting in another Emir loosing some territory to the Christians. The second of those wars is still going against said Emir and I am still unable to assist him. Does anyone have any idea what's going on?