ORIGINAL: Roads
Win-win for France and Russia perhaps.
Well actually you're right! There's not toomuch holding back the French to beat the heck out of Spain. But there not mch to gain in doing so either.
Actually I was referring to a game I once played (Prussia).
The alliance (FR-RU-SP) crushed the GB fleet. Russia and Spain invaded GB and forced it to surrender unconditionaly. As result Spain got Ireland.
Afterwards France was making his points with beating AU and me over and over again. Always spend as much as he could spare for manipulation.
Spain got into North Africa and beat TU all the way back to Egypt without too much of a problem. Meanwhile FR got me to surrender (conditionally) and went on crushing AU After this was done FR-RU-SP went against TU and forced him to give up anything but his home-nation (conditional surrender).
After this FR tried to go for GB again. GB let him enter the country and them stopped his supply line. Some big FR losses followed. Only the FR ans SP combined fleets could rescue the FR troops. SP got Italy for this! But afterwars France wasn't strong enough to survive the war I was waging at him. This wasn't because of my troops but because of the RU, who backstabbed him.
In the end, a pretty beaten up GB won the game. But this was just because noone could get enough VPs to win. But SP was pretty close to it!
My guess is that with a little more offensive he could have won the game.
But I guess this is just one possible ending and I agree it's not very likely to happen. But I've seen FR and SP work together throughout a game - an it worked pretty good, too.
Butof course you're right. If FR would have gone for SP and wouldn't have done the mistake going for GB unprepared, he'd probably won.
So, to sum it up:
There is no BEST strategy in this game. Every game is different.
So, see for yourself. Do mistakes and learn! Do other mistakes and learn again!
And in the end, it's just the diplomacy!