— Five men are arrested near RAF Fairford, the English base from which US bombers strike Iran, on suspicion of preparing an act of terrorism; all five have since been released on bail.
— France sends soldiers, radars and air defences to protect Yanbu, Saudi Arabia's Red Sea oil hub — insisting the aim is not to join the conflict.
— A new US–Denmark–Greenland agreement creates two more US defence areas, at Narsarsuaq and Mestersvig, and expands operations at Pituffik Space Base.
I.
Five arrested over a suspected plot near a US bomber base in England
Shortly after midnight on Sunday 27 September, police were alerted to three white vans blocking a road near RAF Fairford in Gloucestershire, a base from which US B-1 and B-52 bombers have operated against Iranian targets since March. A local farmer reported seeing eight to ten men, some with their faces covered, running away. Five British men aged 23 to 25, all from London, were arrested, first on suspicion of explosives offences and then on suspicion of preparing an act of terrorism.
Bomb-disposal teams examined the vans with robots and about 85 households in the nearby village of Whelford were evacuated. Police have not said what material was found, or whether it could have caused a major explosion. Counter-terrorism investigators are examining several lines of inquiry, including a possible Iranian link, which Tehran's embassy in London called "unfounded and malicious." Links to Russia or to militant groups are also being considered.
All five men have since been released on police bail, with strict conditions. Police stressed that "this does not mean that the investigation is over." Whatever its final explanation, the incident shows how a base used in an overseas conflict becomes a target at home, and how much a vigilant local resident can matter.
France sends forces to protect Saudi Arabia's Red Sea oil hub
On 24 September, President Emmanuel Macron announced that France would send "soldiers, radar systems and defense systems" to protect Yanbu, Saudi Arabia's main oil export hub on the Red Sea. The aim, he said, was "not to get us involved in any conflicts." No troop numbers or equipment details were given, but the radars point to air defence against drones and missiles.
Yanbu has become critical since Iran largely curtailed traffic through the Strait of Hormuz after the US and Israeli strikes of 28 February. Saudi Arabia now routes millions of barrels a day through its East-West pipeline to the Red Sea, bypassing the Gulf. That route is under pressure: the Houthis, at war again with Riyadh since July, have blockaded the Bab al-Mandab Strait, struck Saudi ships and refineries, and on 24 September claimed missile and drone attacks on Yanbu itself. The Saudi-led coalition said it intercepted six ballistic missiles aimed at Taif and Yanbu.
The stakes go well beyond Saudi Arabia. If Red Sea export infrastructure were knocked out for months, Europe would lose its last major oil supply route from the region. Brent crude rose to nearly $107 a barrel on the day of the announcement. The United Kingdom is also sending a Voyager tanker aircraft to support Saudi air defence.
Key terms — et leur équivalent français
air defence (UK) / air defense (US)
défense aérienne, défense sol-air
export hub
plateforme d'exportation
pipeline
oléoduc (pétrole) / gazoduc (gaz)
to bypass
contourner
blockade ≠ embargo
blocus (militaire) ≠ embargo (mesure économique)
to intercept
intercepter
chokepoint
point de passage stratégique, goulet d'étranglement
A new defence agreement gives the United States two more sites in Greenland
On 22 September, on the margins of the UN General Assembly in New York, the United States, Denmark and Greenland signed a new security agreement. It creates two new US defence areas, at Narsarsuaq in southern Greenland and Mestersvig on the remote east coast, expands operations at the existing Pituffik Space Base, and sets up a process for approving further sites with the consent of all three parties.
The text affirms Denmark's sovereignty over Greenland and the right of the Greenlandic people to self-determination. Danish Prime Minister Mette Frederiksen called it "a deal that can last forever," after months of tension over Washington's ambitions for the island. The three governments also committed to a stronger NATO role in the region, with more planning, presence, exercises and shared intelligence. Should Greenland one day become independent, it would have to remain in NATO and honour the agreement.
Analysts note that the deal adds sites rather than a strategy. The Arctic is becoming a contested space, with new shipping routes, Russian military activity and Chinese interest in its resources. The new bases strengthen early warning for North America, but their value will depend on how they are connected to NATO and NORAD planning.
Proxy warfare describes a conflict in which a state fights through others: allied militias, armed groups, or individuals recruited for a single task. The sponsoring state gains reach and deniability; the target struggles to respond without escalating. This week's stories show both faces of the concept. In the Red Sea, the Houthis, backed by Iran, strike Saudi oil infrastructure that Iran itself does not need to touch. In England, investigators are asking whether young men from London were acting for a foreign state near a base used against Iran. For analysts, the key question is never only who acted, but who benefits, and who directed. (Proxy warfare — guerre par procuration.)
A new issue every Monday
The week's essentials in defence, security and intelligence, assessed from open sources: in English, with key terms translated into French.