Iraq (AFOE 1)

Episode 1
ISIS rebelled from Iraq. Iraq was able to defeat ISIS, but Kurdistan got some of their lands in the peace treaty. This was justified by Kurdistan occupying those territories. Iraq would let this happen in order to maintain good relations with USA. They had no plan of taking those lands back as they felt that there would be too many revolts. They also got some lands from Syria despite being on Syria's side. This is because the prior borders were literally just lines in the sand.