Mark Sedwill (@marksedwill) 's Twitter Profile
Mark Sedwill

@marksedwill

Parliamentarian Diplomat Non-Exec

ID: 218963487

calendar_today23-11-2010 15:47:17

1,1K Tweet

15,15K Followers

512 Following

BBC Radio 4 Today (@bbcr4today) 's Twitter Profile Photo

Donald Trump and JD Vance have both argued Europe should pay for a greater share of its defence. Lord Mark Sedwill, UK's National Security Advisor from 2017-2020, tells #R4Today it's not 'American altruism' to be involved in European defence, but is in its 'security interest'.

Lord Speaker (@lordspeaker) 's Twitter Profile Photo

“And usually what one finds is the strongest ministers are the ones who tend to be most complimentary about their officials. And it’s the weaker ministers who will sometimes use their officials as an alibi. It’s really simple.” ⬇️Hear from former Cabinet Secretary, Lord Sedwill

Lord Speaker (@lordspeaker) 's Twitter Profile Photo

How important is soft power vs hard power for the UK? Former diplomat Lord (Mark) Sedwill discusses with me on the latest episode of my podcast, Lord Speaker’s Corner. 🎧 Listen wherever you get your podcasts

Lord Speaker (@lordspeaker) 's Twitter Profile Photo

“The most dangerous moment I ever faced? There is nothing more frightening than a frightened young man with a gun.” Lord Sedwill served as a UN Weapons Inspector in Iraq and a diplomat in some of the most intense regions in the Middle East. 🎧 Hear more youtube.com/watch?v=p1GvvM…

Royal Marines (@royalmarines) 's Twitter Profile Photo

Take to the water in the name of the Cold Dip Commando... In tribute to #RoyalMarines veteran Tim Crossin, who died in December after a long battle with cancer, swimmers are taking to the water around the UK this January to raise money. Find out more: royalnavy.mod.uk/news/2025/janu…

Take to the water in the name of the Cold Dip Commando...

In tribute to #RoyalMarines veteran Tim Crossin, who died in December after a long battle with cancer, swimmers are taking to the water around the UK this January to raise money.

Find out more: royalnavy.mod.uk/news/2025/janu…
Second Sea Lord (@martinjconnell) 's Twitter Profile Photo

Fascinating 24 hours inside the Arctic Circle with UK Commando Force Operations as they hone their winter warfighting skills working alongside our Norwegian allies as we sharpen our commitment to NATO . Not many people can operate in this unforgiving environment. Strong evidence of innovation

Fascinating 24 hours inside the Arctic Circle with <a href="/Commando_Ops/">UK Commando Force Operations</a> as they hone their winter warfighting skills working alongside our Norwegian allies as we sharpen our commitment to <a href="/NATO/">NATO</a> . Not many people can operate in this unforgiving environment. Strong evidence of innovation
Royal Marines (@royalmarines) 's Twitter Profile Photo

“Not many people can operate in this unforgiving environment.” High-profile visitors came to Camp Viking to see first-hand the work UK Commando Force Operations are doing as Arctic training continues to ramp up - seeing new kit in the hands of Commandos. More: royalnavy.mod.uk/news/2025/janu…

“Not many people can operate in this unforgiving environment.”

High-profile visitors came to Camp Viking to see first-hand the work <a href="/Commando_Ops/">UK Commando Force Operations</a> are doing as Arctic training continues to ramp up - seeing new kit in the hands of Commandos.

More: royalnavy.mod.uk/news/2025/janu…
NATO Allied SOF Command (SOFCOM) (@nato_sof) 's Twitter Profile Photo

❄️High North Training = Unmatched Readiness The UK Commando Force Operations is mastering Arctic warfare in -35°C conditions, proving their ability to survive, move & fight in extreme environments. Royal Navy Second Sea Lord, Vice Admiral Second Sea Lord CBE & leaders from NATO, JEF nations

NATO JFC Norfolk (@jfcnorfolk) 's Twitter Profile Photo

UK Royal Marine Commandos have deployed to Norway to enhance their abilities to operate in all conditions with NATO Allies. The ability to operate in the #Arctic #HighNorth is fundamental to NATO defence. Royal Marines UK Commando Force Operations #WeAreJFCNorfolk #WeAreNATO

UK Royal Marine Commandos have deployed to Norway to enhance their abilities to operate in all conditions with NATO Allies.

The ability to operate in the #Arctic #HighNorth is fundamental to NATO defence.
<a href="/RoyalMarines/">Royal Marines</a> <a href="/Commando_Ops/">UK Commando Force Operations</a>  #WeAreJFCNorfolk #WeAreNATO
Peter Ricketts (@lordrickettsp) 's Twitter Profile Photo

I’ve sent the PM on behalf of 33 distinguished signatories (+me) a letter calling on the Gov’t to sustain funding for the British Council. An effective national security strategy in a changed world needs not just more defence spending but investment in our soft power assets. 1/2

I’ve sent the PM on behalf of 33 distinguished signatories (+me) a letter calling on the Gov’t to sustain funding for the British Council. An effective national security strategy in a changed world needs not just more defence spending but investment in our soft power assets. 1/2
Peter Ricketts (@lordrickettsp) 's Twitter Profile Photo

Soft power is the cheapest weapon in our arsenal of influence. The Council has a stellar global reputation, and an income generating potential which none of our allies can match, making £5 of income for every £1 it receives. We call on the Gov’t to invest in this national asset.

IISS News (@iiss_org) 's Twitter Profile Photo

We are delighted to announce the appointment of Mark Sedwill as the new Chair of the IISS Trustees. Taking up the role on 16 July 2025, he will lead the board that is responsible for the overall governance and strategic direction of the Institute. He succeeds Bill Emmott, who

We are delighted to announce the appointment of <a href="/marksedwill/">Mark Sedwill</a> as the new Chair of the IISS Trustees. Taking up the role on 16 July 2025, he will lead the board that is responsible for the overall governance and strategic direction of the Institute. He succeeds <a href="/bill_emmott/">Bill Emmott</a>, who
UK Commando Force Operations (@commando_ops) 's Twitter Profile Photo

Yesterday, the PM visited Royal Marines and Dutch Korps Mariniers to witness the close bond between our two Corps, and discuss further bi-lateral cooperation, as part of the NATO alliance. #WeAreNATO

Yesterday, the PM visited <a href="/RoyalMarines/">Royal Marines</a> and Dutch <a href="/korpsmariniers/">Korps Mariniers</a> to witness the close bond between our two Corps, and discuss further bi-lateral cooperation, as part of the <a href="/NATO/">NATO</a> alliance. 
#WeAreNATO