According to reports, Iran may claim $18 billion in damages from Pakistan for an unfinished pipeline if Pakistan does not complete its part of it as agreed. What forum would such a claim take place in?
According to reports, one potential forum is the International Court of Arbitration. All reports I see say that the agreement specifies that the forum will be an arbitration forum. Whether it can be any arbitration forum or if it must be the ICC, or can be selected from a list, depends on the specific wording of the Gas Sales and Purchase Agreement of 2009, which I have not been able to find.