My Lords, I was present in the Chamber and listened to the debate when this matter was debated in Committee, although the amendment has changed slightly. Since then, I have read and considered the arguments. At the time, I was persuaded that, on balance, the noble Lord, Lord Pannick, was right and the absence of such a power as is envisaged by the amendment was a real risk of injustice. However, I have changed my mind. It is, of course, fundamentally important that we respect our treaty obligations, particularly Article 103 of the UN charter. What higher obligation could there be?
The UN, in common with all international institutions, is not infallible. For example, we know that the European Court of Justice, which we must obey, and the European
Court of Human Rights are not infallible. However, sometimes there is a need to subsume individual, national needs into the need for an overall, international understanding. It is vital that we respect the decisions on sanctions that have been made by the UN. As a permanent member of the Security Council, we can influence those. The Human Rights Council, to which my noble friend referred, can of course make mistakes, but it is undesirable that individual countries can pick and choose which sanctions they want to follow. I look forward with interest to hearing what the party opposite says about our relationship with the UN.
The Secretary of State can, and should, use his best endeavours in appropriate circumstances to try to influence matters, and can be told to do so by the court, but this goes further. Although the amendment has precursors to the exercise of the power, it does ultimately give the court the power to set aside the decision of the Minister. The noble Lord, Lord Pannick, says that this is a rule-of-law issue. It is indeed; it is a rule of international law and international comity, so I am afraid I cannot support the amendment.