The former Home Secretary dismissed the 22-year-old’s claim she did not participate in terrorism. He said: “If you did know what I knew… you would have made exactly the same decision.”
Begum — dressed in Western style, including a baseball cap and a vest — said her only crime was to be “dumb enough to come to Isis, and even that can be refuted because I was 15”.
She ran away from Bethnal Green in London to join Islamic State in Syria in 2015, along with two pals, Kadiza Sultana and Amira Abase.
It is thought Sultana was killed in an airstrike. Abase may still be alive.
Begum has since had her British citizenship revoked.
Speaking from a camp in Syria for families of IS fighters, Begum said she was unaware she was joining a “death cult” and her role was to be a “mother and wife”.
Addressing his decision to revoke Begum’s UK citizenship, Mr Javid said: “I won’t go into details of the case but you certainly haven’t seen what I saw. The decision is both morally right, absolutely right, but also legally correct and the right one to protect the British people.”
The Supreme Court ruled in February that Begum could not return to Britain to fight the citizenship decision because she would be a risk to public safety.
But Begum told ITV’s Good Morning Britain yesterday there was no evidence she helped prepare terrorist attacks. She said: “I would rather die than go back to IS.”
In a direct plea to Boris Johnson, she said: “I could very much help you in your fight against terrorism because you clearly don’t know what you’re doing.”