Then-US intelligence chief Tulsi Gabbard used Kurdistan President Nechirvan Barzani to establish contact with IRGC leadership, which signalled support for resolving the crisis through negotiations.
Washington proposed confidential US-Iran talks in Erbil, but Tehran raised concerns over potential Israeli attacks on its representatives. The meeting never took place, though separate talks later produced a June memorandum that subsequently fell apart.
Diplomatic efforts remain stalled while Iran has raised threats against US troops and Washington maintains a major military presence in the region, including the USS Abraham Lincoln.