The families of US soldiers who have died in the US-Israeli war against Iran are battling to ensure they receive appropriate pay and benefits for their loved ones.

Libby Klinner, a widow, wrote on social media that the US air force had deemed her ineligible for additional benefits following the death of Major Alex Klinner, her 33-year-old husband, because Congress had not officially declared war.

He was one of six crew members of a KC-135 refuelling aircraft that crashed in western Iraq in March while supporting US strikes against Iran.