I am playing as the dutch and ever since I took Brussels I am at war with France and Spain.
Both of them are quite strong though and I do have a full stack near Paris garrisoned in a french fortress that they left empty.
But, Paris is fully garrisoned. mostly with mobs which I can handle, but there is a full stack of Spanish standing next to Paris. And I cant afford to train another full stack.
The french have a large navy that likes to blocade my trade routes so keeping my navy big does drain my money quite a bit as well.
Would it be possible to cause their alliance to break? When they are divided it would be a whole lot easier since I am often fighting both of them when they send small armies to raid my belgian villages.