A former US ambassador whose son-in-law was killed in the Brussels airport attack says Belgium should acknowledge "a horrible failure" and follow the example of the 9/11 compensation fund in treating victims equally and without delay. On 22 March last year, James Cain and his wife Helen were told by their eldest daughter Cameron, 26, that she had secretly married her partner Alexander Pinczowski, 29 - and that he and his sister Sascha were missing in the Zaventem blast. Three agonising days later, the siblings - who were heading for New York - were confirmed dead.