Military Aid and Alliance Mechanics

[Average Geography Nerd 11]

There should be a game mechanic that prompts the AI to send weapons and financial aid when a country it likes (or at least has a neutral opinion of) is at war with a nation it dislikes heavily. The same thing goes for the player, but they can decide whether or not they want to send aid. This punishes aggressive expansionism, leading to bogged-down wars if you don't play your cards right, and makes the game a lot more realistic. The diplomacy mechanics in Age of History 2 were oversimplified and unrealistic. Implementing military and financial aid, alliance mechanics for NATO (if a NATO country is attacked, all nations must agree for the alliance to respond as a collective, otherwise nations can only take action individually), and an influence mechanic that allows nations to use economic investment and military aid to influence a nation. Depending on the amount of influence a nation has upon another, it receives power over diplomatic decisions made by that country. For example, North Korea is heavily influenced by Russia and China, and without their funds, the North Korean government could not run properly. This means that the influencing nation can choose whether or not they back the nation they are influencing in that nation's diplomatic maneuvers. The more influence these countries hold, the more their support influences what the other nation will do. 

[New port 12]

That's a great idea. But if I could add something, you should be able to join other wars (the side you want to join can let you in or reject you). Then again, an AI civilization shouldn't always send weapons and financial aid when a country it likes because she might be afraid of the aggressor.

In my opinion, these few details have been brought to perfection and I hope Lukasz will add them.