Robert Jenrick
The Today programme host repeatedly pressed the Tory leadership candidate for details over his bizarre remark.
Tom Tugendhat said he had shown "a fundamental misunderstanding of military operations".
"I know exactly where I stand on this but I don’t feel I need to wear a t-shirt to prove it," the former home secretary said.
The leadership favourite issued the grim warning at the Tory conference in Birmingham.
Richard Fuller refused to give his opinion on the leadership candidate's idea.
The Tory leadership candidate was repeatedly pressed by Laura Kuenssberg.
The four remaining candidates vying to succeed Rishi Sunak will face off next week at a party conference like no other.
'What Is English Identity?': Robert Jenrick Skewered By Sky News Presenter In Excruciating Interview
The Tory leadership struggled to explain what he meant in his latest intervention on immigration.
He follows Priti Patel out of the exit door.
"It’s natural that we would lean in that direction," the former Tory minister said.