@jak
I dunno, he's not doing anything we didn't know already he would gladly do. In fact, what she's proposing is fully in keeping with what he thinks would be Kouka's best interest. (Doesn't make his callous warmongering any better, but still.)
The only catch, of course, is that the Four Dragons and Hak aren't his to give. So Yona will have to make a move, anyway.