How can I successfully get land from allied countries?

[Ja_Boy]

I am playing as Greece, in the allies. I reclaimed the Dodecanese islands from Italy, which is a core state, and when the war ended, the USA had the islands. Whenever I try to ask for it from the USA, they won't give it back. Is there anything else I can try?

 

[Sidetrack Nick]

There is a mod to remove the AI from the peace conferences. I use it to prevent BS from happening. As far as before the peace conference, you can use diplomacy to ask for control over an occupied province. There are cheats that make the AI give it to you too, built into the interface, in order to help the player make up for the lack of AI logical communication/decisions.

Look up 'Player-Led Peace Conferences' in the workshop.