Vance says halting Iran's nuclear capabilities a 'core goal'published at 02:43 BST 12 April
Vance took on some questions and answers one on Iran's nuclear capacity.
"The simple fact is that we need to see an affirmative commitment that they will not seek a nuclear weapon and they will not seek the tools that will enable them to quickly achieve a nuclear weapon."
He describes this as Trump's "core goal".
Vance says their nuclear programme has "been destroyed" but stresses that there's a need for a "fundamental commitment of will" against Iran developing a nuclear weapon in the future.
"We haven't seen that yet. We hope we will."












