THE HAGUE, March 30 (Reuters) - In a partial victory for Iran, judges at the International Court of Justice (ICJ) on Thursday ruled Washington had illegally allowed courts to freeze assets of some Iranian companies and ordered the United States to pay compensation but left the amount to be determined later. Relations have been strained after attempts to revive a 2015 nuclear deal between Iran and major world powers stalled, and as Iranian drones are being used by Russia against Ukraine. 75 billion in assets from Iran's central bank held by the U