War is not a viable option any longer.There is literally no incentive for a player to go for war mongering, especially in a water-dominated map. AI spam ships and manage ships better than a human player can, such that the instant a war is declared, you can expect all of your trade routes to be ripped apart. You can argue "well historically trade routes were the first to go in a time of war." Yes maybe that's true, but "historically" trade routes were important units to protect for this reason. Given the current game mechanics, I've sat frigates on top of my cargo ships but somehow the enemy still destroy my trade routes. The fact that my cargo ships have no vision also limits my ability to save them or protect them. Given how exposed trade routes are, especially to an enemy AI's navy, there needs to be some way to defend trade ships. If trade ships don't get the option to flee (like workers do when barbarians come by), then there should at least be an option to attach a military escort over the trade ship to ensure its security. As it stands right now I can expect 0 income from trade routes the instant a war is declared (particularly crippling as I'm playing Venice). This puts me in a tough corner, since on the world stage in the game I'm playing right now I'm behind technologically, diplomatically, and culturally. Military is the only forte my civ carries right now, but I can't fund a military if England's caravels destroy my trade routes left and right without any way for me to defend them.