NATO remains the cornerstone of the UK's defence and security. All allies stand steadfast to defend and deter threats to the Euro-Atlantic, underlined by our unwavering collective commitment to article 5 of the Washington treaty.

You will not be surprised, Mr Speaker, to know that I think there are a number of excellent candidates to be the next NATO Secretary General, and I absolutely agree that those who have been to the fore during the response to Ukraine and who have skin in the game, as my hon. Friend says, should be leading contenders.

In the context of a question about NATO, the hon. Gentleman is wrong. NATO massively outnumbers Russia as an adversary. The UK commits more than our minimum requirement to NATO. Moreover, allies around NATO are clear that contributing in the traditional domains of land, sea and air is no longer sufficient and that NATO needs capabilities in space and cyber-space, on which, through the integrated review, the UK has invested and is to the fore.

The Secretary of State has been clear throughout the integrated review process that we are a threat-led Department. As things stand, and as I have said at the Dispatch Box a number of times—I know that my right hon. Friend the Defence Secretary has said likewise—a lot of what is in the IR is proving to be vindicated by the realities of the conflict in Ukraine. As we move towards Madrid, and NATO is increasingly clear about what it wants as an alliance as capabilities across all five domains, the UK continues to lead thinking, rather than being behind it.

The Defence Secretary is a passionate advocate for our nation's armed forces and for defence within the Government, but his correspondence with other Ministers in the Cabinet necessarily should remain private. The reality is, as I said in answer to the question earlier from the hon. Member for Huddersfield (Mr Sheerman), that the UK exceeds its NATO minimum requirement, and as NATO moves into its new strategic concept and looks at how it will operate across all five domains, it is the UK's decisions from the IR that are informing what others will now contribute to NATO, rather than vice versa. The right hon. Member for Wentworth and Dearne (John Healey) finished with a question about the Secretary of State setting out a vision for NATO. I cannot think of anybody within NATO who has set out a more compelling vision for the alliance and the UK's role within it.

The concept has not been signed off yet. At Defence Minister meetings this week, the Secretary of State will be looking at it further before it goes to the NATO summit in Madrid. As the hon. Lady would expect, Ministers from the MOD and the Secretary of State most obviously are travelling around the Euro-Atlantic all the time in order to have these discussions, and people from other NATO capitals are visiting the MOD, so that we can build a shared consensus before we reach the moment of decision, and the UK has been instrumental in shaping those thoughts.

I was in Bucharest on Thursday evening and Friday morning, having the exact conversations that the hon. Member for Rutherglen and Hamilton West (Margaret Ferrier) was checking we were having. I had the honour when I was there of meeting members of the RAF who are involved in Operation Biloxi and air policing. I indeed pay tribute to 140 Expeditionary Air Wing and all other members of the RAF who have been involved in air policing in Romania, Lithuania and elsewhere.

It is one of those wonderful moments when we are in vigorous agreement. We would share the view that the state levers of hard power and the societal levers of resilience are hugely important, that NATO must stand for something and that its members must subscribe to a rules-based international system.

Opposition spokespeople are in the habit of starting the clock on pledges for defence spending increases the day after the UK makes an enormous increase in defence spending. The UK led the alliance in deciding to increase spending in the face of increased insecurity in the Euro-Atlantic. NATO's strategic concept does not specify exactly what each nation must have; the strategic concept is what NATO as an alliance wants to do.