I wish you were a little more specific about what you were facing, but it sounds like you have a few options.
You are not going to make peace, your only option is to defend until the enemy loses most of its army trying to take your cities, and then you have to strike back.
If you are facing a big invasion force, build troops like mad, numbers are more important than quality in defending cities so pump out those italian spear militia. sell unneeded buildings, do whatever it takes. Don't waste money on xbows if you are defending your walls, italian militia or spears will be better value for money in sieges. 5 italian spears (or regular militia in a pinch) and a general can hold a city against almost anything.
You need to go on the offensive at some point, i would recommend Milanese since they are close to you and Milan and Genoa are very rich large cities, you will cripple them if you take these. After 2 or 3 stacks of their troops have been slaughtered at your walls, take at least one of these cities. They will have minimum forces to strike back with and you will gain a few 1000 per turn, which they will lose.
Abandon Durazzo, I find it virtually worthless and more of a liability than an asset, the garrison required to hold it against the Byz usually costs more than the city's income. Use the garrison from Durazzo to bolster your defenses elsewhere.
Try to send a small army behind the Byz lines, I find they usually leave Corinth and Thesalonica with very small garrisons, often just a general. Even if you don't take the cities, you might lure them into attacking you in the mountain passes in the Ragusa/Durazzo area where you can sit atop a mountain and inflict 10:1 losses against them.
Try to fight the HRE in the Alpine passes where you can do the same as mentioned above. Try to take Innsbruck as it is probably their only castle in the area, you will take away their ability to build anything except militia. Even if they have Bern, you will take away half their local troop production.
If fighting defensive battles in the mountains like I said, take as many pavise militia as you can (at least half your army), they will slaughter the enemy on the way up and can stand their ground once the enemy gets to you.
I hope this helps a little, i will try to help you more if you give some specifics (what are your garrisons/field armies like, are you making any money, what is the numbers and unit types in the enemy armies, what turn or year is it) etc.
Bookmarks