Director of Military Sciences at the Royal United Services Institute @RUSI_org; recovering former civil servant; all views expressed here are my own.

Joined February 2024
283 Photos and videos
A different vantage point today for the ever-excellent @RoyalAirForce flypast, after Trooping the Colour.
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Matthew Savill retweeted
Jun 13
The December 2024 assault near Lyptsi by the Khartia Brigade was an impressive operation, but only the first stage was unmanned. On the first day, Khartia employed UGVs and UAVs to inflict casualties (mostly caused by Mavic drops) on Russian forces to set conditions for an assault. The second day involved a company-size mechanized assault with infantry who dismounted from BMP-1TS and M113 APCs. Drones did not seize or hold terrain, infantry did. youtube.com/watch?v=Ql47h1UP…
A British drone industry would not be a cost. It would be a renaissance. British kit, designed here, built here, used by our forces and sold to our allies. War has already changed. Britain needs to as well. dailymail.com/debate/article…
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Matthew Savill retweeted
This week the most advanced AI model on the planet got switched off by a foreign government. British researchers were studying it. British companies were testing it. British hospitals were piloting it. Not any more. This isn't an AI story. It's the story of every industry we used to lead. Britain has some of the best AI talent in the world. DeepMind was built here. Our AI Safety Institute writes the rules other countries follow. We have the researchers, the universities, the standards. What we don't have is the power stations to run the data centres, the planning system to build them, or the industrial base to make the chips. So the work happens here and the value lands somewhere else. We invent. Others build. Others decide. Then we read about it on Saturday morning. Same story as the kit our soldiers don't have. Same story as the factories we used to. I spent nine months in government making this argument inside the room. I'll make it louder from outside.
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Claude models is not affected. We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible. Read our full statement: anthropic.com/news/fable-myt…
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‘At pace’ klaxon. 🚨
As drones reshape conflicts from Ukraine to the Middle East, we are focused on innovating faster. Defence Secretary @DanJarvisMBE opened the new Uncrewed Systems Centre at DroneTEX, Europe’s largest drone testing facility, designed to develop and field capabilities at pace.
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Thoughts for @SkyNews. Our say/do gap manifests in ambitions for European leadership where we can still make a contribution, but currently not at the scale we have promised.
'What is the danger we won't be able to fulfil our commitments to NATO?' - @skynewsSam 'The first problem is that we have signed incredibly ambitious targets' - Matthew Savill, Director of Military Sciences at RUSI Latest 🔗 trib.al/kL1cwHr 📺 Sky 501
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The GDP figure is an indicator of political commitment. Stop using it as the only measurement of defence *spending*, which has actually fluctuated over the past 20 years, including being distorted by operations (see next tweet). cc: @haynesdeborah
John Healey has resigned as defence secretary because the amount of money that Sir Keir Starmer committed to defence spending fell "well short of what is required". So what do the numbers tell us? @AlexRossiSky takes a look ⬇️ trib.al/kL1cwHr 📺 Sky 501
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From the Commons Library briefing note and the MOD's Departmental Resources Report.
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There are days when I miss working at the Ministry of Defence. And then there are days like today...
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Matthew Savill retweeted
I was asked earlier on the BBC why other NATO countries have avoided DIP-like crises. Part of the answer is the large and growing share of spending taken up by nuclear deterrent & adjacent areas, leaving less for conventional forces. That is partly why German conventional spending will be around double UK spending, remarkably, by the end of the decade. Part of the answer is that other countries are willing to allocate amuch higher share of national output to defence. Poland & Baltics nudging 5% of GDP. Healey's letter points out today that UK would be at 2.68% of GDP by 2030 on the DIP settlement he was given. But more important than this is the gap between spending and military commitments: the UK spends more (it is third highest spender in NATO in absolute terms) but also commits considerably more, leaving a wide and in recent years growing chasm between promises & delivery.
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Matthew Savill retweeted
UK defence secretary John Healey’s resignation letter is devastating for Keir Starmer He accuses the PM of being “unable” (!!) and the Treasury “unwilling” to “commit the resources that the nation needs to defend the country at this time of rising threats” Healey reveals he was first told about the new lower DIP settlement figure of £13.5bn (first reported by FT) on Monday - ahead of PM wanting to announce it this week UK must commit to “a headmark date for 3% of GDP on defence in 2030”, Healey declares
My letter to the Prime Minister
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The credibility gap between the rhetoric on urgency/need and the volume/rate of any increase in defence spending.
My letter to the Prime Minister
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Matthew Savill retweeted
A few thoughts on Healey's departure. At the end of the day, the root cause is a failed defence review process. The review proposed things on the basis that spending would rise to 2.5% of GDP by 2027, a relatively modest pace of growth that was & is incompatible with everything the UK wants to do—GCAP, AUKUS, a strategic reserve corps for NATO on land, carrier strike & more munitions/readiness. The gov't was unwilling either to make choices among these, which would have been politically and diplomatically painful, or to spend *significantly* more in the short & medium term, instead pointing to non-credible commitments out into the mid-2030s. There was and is no credible path to the 3.5% of GDP target by 2035 that the PM publicly agreed at the Hague last year. Now the UK is going to go into the Ankara summit in a weak position, with a teetering government, and with a likely successor to Starmer who is no more likely to support higher defence spending, all with predictable consequences for the US-UK relationship.
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Matthew Savill retweeted
Good that Freuding makes clear this is a capability timeline, but also important to specify what sort & scale of attack this assessment assumes. '“2029 is not a German timeline. It’s NATO-agreed intelligence,” Freuding said. “All 32 NATO partners agree that Russia might have the capability to invade a NATO partner country in 2029.”' politico.eu/article/we-must-…
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Matthew Savill retweeted
Lots of discussion in recent weeks about how to fund the (much-delayed!) Defence Investment Plan. While this is important, it is only the first step in the longer-term and much larger defence spending increase this government has committed to. A short thread:
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Matthew Savill retweeted
My colleagues model the growing spread and depth of Ukrainian strikes inside Russia. economist.com/interactive/eu…
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Whether the Defence Investment Plan is out tomorrow, or 'soon' there are a number of areas on which to evaluate it (and not just raw cash or numbers of ships). My thoughts in here, but things to watch include: (🧵)
Jun 10
'The significance in the UK’s Defence Investment Plan is therefore that it is vital to actually determining both the pace and prioritisation for change in the Armed Forces. Without it, the Strategic Defence Review is a list of ambitions and a rational for change, but expressed as a shopping list, and not a sequenced plan.' writes @MTSavill in the latest #RUSICommentary. rusi.org/explore-our-researc…
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There's plenty more in the article, but it takes a cynical tone because the delay does not bode well for the type of change and ambition set out by the SDR, and matched against the government's own rhetoric.
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