He made an oath to be a crusader. He said he was a vessel of the pope. He said that we're on the side of the church. And he sends communications to the pope at that time, who was innocent the second, of this conflict between the barons and the king, and he's looking for support. Now eventually the pope's going to respond on the side of John I, but they don't have the internets back then, so the letter took a very, very long time. And by May, the rebels who had organized themselves, this rebel baron group, attack London. And at that point, now the king realizes he's locked out of London, he's going to have to start to negotiate with these guys.