Diego Garcia Military Base and British Indian Ocean Territory Bill

Debate between Lord Kerr of Kinlochard and Lord Weir of Ballyholme

Committee stage
Tuesday 25th November 2025 Lords Chamber

[Lord Weir of Ballyholme (DUP)]

It is clear that the Chinese interests—and indeed those of other countries, which I think goes to the heart of why we are seeing this as a key strategic point of view—go beyond simply trying to create trading relationships. We know that Mauritius has around 1.3 million people, much smaller than even my own beloved Northern Ireland—but President Xi is not beating down the doors for a state visit to Belfast any time soon, as far as I am aware. Whether it is China, India or anyone else, whatever the assurances that are there, what are the practical implications and what can we do to assure ourselves that there will not be a level of mission creep?

I will continue very briefly, as I suppose time is moving on. Amendments 61 and 62 probe the position as regards airspace and maritime assurances. Again, this has been sold particularly on the basis of it being not simply the British position but the US position, so I think we need to see some level of joint assurance in relation to that. There has been a concern—and some level of suspicion, which I seek assurances that the Government can allay—that the position of the Americans has been effectively to go along with this treaty. There was, I think, a level of reluctance. It was reported initially that the Americans had given a level of lip service. I think we want to get a much greater level of reassurance that they have bought into this, rather than simply acquiescing with something that one of their allies has asked for. Specifically, as highlighted by the noble Baroness, Lady Goldie, there are some restrictions in terms of notification that seem to undermine the security implications.

For instance, if we look at the airspace side of things, there is a 12-mile zone around Diego Garcia, but airspace around the rest of the Chagos Islands is simply with Mauritius. On a maritime basis, we know that the treaty details that the archipelago waters, the territorial seas and the EEZ around the Chagos Islands are all within the control of Mauritius. Where there can be a level of restriction or interference on airspace or maritime boundaries, that can also create a concern. We seek assurances from government that what is being proposed—and this is a question of belt and braces—is actually going to provide the genuine level of defence. If so much else is potentially being sacrificed to bring about this deal, we need to make sure that we have something that is ironclad as regards our defences.

[Lord Kerr of Kinlochard (CB)]

It is probably best to let the Americans be the judge of their own best interests. They seem to be rather keen on this treaty and its ratification. The Secretary of State in Washington, who is also currently head of the National Security Council, called its conclusion a “monumental achievement”. He does not seem to be concerned that it might open the road to Chinese influence; nor do the Indians, who are, of course, close friends of the Mauritians and are as concerned as we and the Americans are about Chinese influence in the Indian Ocean. The treaty is seen as a barrier to that, not an opening to it.

--- Later in debate ---

[Lord Kerr of Kinlochard (CB)]

I am not sure what remarks the noble Lord is referring to. I am talking about the position taken by the current Administration of the United States.

[Lord Weir of Ballyholme (DUP)]

I appreciate what the noble Lord has said in relation to the response in the public sphere by the American Government. Whatever one’s views—and there will be a range of views towards the current American Government across this Chamber—it is a fair accusation that they occasionally lapse into a certain level of hyperbole. It is either the greatest thing that has ever happened or the worst disaster. We should not necessarily take an enthusiastic apparent public endorsement as something being a great thing from the Secretary of State or the current President as a full reassurance of the American position.

[Lord Kerr of Kinlochard (CB)]

I think it is probably best to take what they say at face value. They probably mean what they say.

I will now attempt to address the amendments from the noble Baroness, Lady Goldie, and surprise her by saying that I think they are extremely sensible. I understand the thinking behind them. I understand her concerns that are encapsulated in Amendments 83 and 85 to 87, but I think the amendments are probably unnecessary. I suspect that the statements the noble Baroness is calling for could be made today. I suspect that we will hear them before the debates on this Bill are over, but it seems to me important that we should hear them, so I understand what the noble Baroness is saying.

I would like briefly to refer to the consistent and cogent arguments from the noble Lord, Lord Bellingham, for a sovereign base area solution rather than the solution that is written into the treaty. I do not know why the last Government looked at it but decided not to pursue it. I do not know what the reasons were. They were probably, I would guess, topographical—we are talking about a very large area, rather than the two restricted areas on Cyprus—but I do not know, and I think it is a valid question to ask.

The big point, surely, is that we are where we are. We have a treaty, and we cannot ratify it until we pass this Bill. That is why I disagree strongly with the four amendments in the name of the noble Lord, Lord Kempsell. He comes straight out and says that he wants renegotiation. He wants the treaty renegotiated in four separate respects, but we are where we are. The treaty exists. If we were to decide to reopen the negotiation, I think we could expect a rather hostile reaction in the United States. The principal concern of the United States is security of tenure and the continuing co-operation of third countries over supply chains. That is what they are concerned about—not our blue eyes but security of tenure of the base. Given that, some in Washington would argue that it is time for the United States to switch sides, to ditch us and do a direct deal with the Mauritians. That argument has been made in Washington and could be made again if we get ourselves into such a mess that, having secured a treaty that the Conservative Government sought and the Labour Government have concluded, we were to decide, after all, that it was not a treaty we wanted and that we wanted to go back to the start and negotiate something different. I can imagine the United States losing patience with us.