The reason that we have made this distinction in terms of procedure is that we are obliged in law to implement UN sanctions. Once the sanctions have been agreed at the UN Security Council, the UK has an obligation to implement them under the UN charter. Not to do so would leave the UK in breach of international law—hence the distinction in the procedure that we are using.
Returning to what the hon. Member for Glasgow Central described as “monstrous”, I say again that sanctions are a matter of foreign policy and so are reserved to this Parliament.