Speaking on the BBC's Politics Live, Flynn discussed the US handling of the war, highlighting the strike on a primary school that Iranian officials say killed 168 people, including about 110 children.
“If this war killed children at a school I think that’s a tragedy and the US has to investigate that," Fred Fleitz, a former adviser to President Donald Trump, told the programme. “It’s not a tragedy, it’s a war crime," Flynn replied.
Politics Live presenter Vicki Young was also joined by Labour MP Sarah Smith and Conservative MP Joe Robertson.
