Labour’s shadow defence secretary has failed to promise protection of the Falkland Islands will appear in her review of policy as she clashed with a former veteran on live radio.

Emily Thornberry was accused of “equivocating” by repeatedly declining to promise the party’s current policy of self-determination would be backed in her defence review.

She also hinted at a split at the top of the party by saying she had confronted Jeremy Corbyn about his views on the Falklands in private and refused to say he backed her position.