That was one of the worst neighbors to have, especially so close. What awful luck. I hope we can avoid being boxed in. Try to avoid making contact as long as possible.
Idea 1: What I would do.
Idea 2: TGLH. I do not think we can defend it unless we get a decent production base on the continent. I do not think we can a
Idea 3: We can only do it if we somehow surprise them. 1 skirmisher or axe stops it.
We should be extremely wary of a skirmisher rush/choke as we are so close. If they see our position, they will know that we have to fight them soon and try to take us out early. They might decide to tech archery and be in our borders in 10-15 turns as archery is cheap now. If they camp our bronze tile with skirmishers and it is hill or forest we can not counter that until numids. Then we are screwed basically.
My singleplayer balance mod of BTS: https://dl.dropbox.com/s/3u6g4b2nfa74qhm...%20mod.odt?