IRAN SEIZES ANOTHER US DRONE AND THREATENS THE INDIAN OCEAN. TRUMP SAYS NO TO THE DEAL. THE CHANNEL STAYS OPEN ANYWAY.

• Iran is rerouting trade north through the Caspian Sea, and it is not going well. With southern ports under US naval blockade, Caspian shipping is now a strategic necessity rather than an option 3AJE Iran shifts trade north to Caspian Sea as war impairs Strait of Hormuz. The problem: the Caspian is shrinking. Water levels have dropped roughly 2 metres since the 1990s and are falling more than 20 centimetres annually. Iran's northern ports can now handle vessels of only 4,000 tonnes, down from 6,000 3AJE Iran shifts trade north to Caspian Sea as war impairs Strait of Hormuz. Iranian ships transiting via Russia's Volga River are getting stuck for days at a time. At the Norduz border crossing with Armenia, up to 1,800 trucks are queuing for several days simultaneously 3AJE Iran shifts trade north to Caspian Sea as war impairs Strait of Hormuz. Iran is surviving on land routes and a degraded northern sea lane. This is not a permanent workaround. It is an economy on crutches.

• The US-led coalition's Iraq headquarters closes on September 30, in two days. Baghdad confirmed Sunday that the closure is proceeding on schedule, with no foreign military bases remaining on Iraqi soil 10AAM Iraq says coalition headquarters to close by Sept. 30, citing stable security. The coalition, formed in 2014 to fight ISIS (Islamic State in Iraq and Syria), had its second phase running from an air base in Erbil. Future cooperation with coalition countries will be limited to intelligence sharing and arms programs, per Iraqi officials 10AAM Iraq says coalition headquarters to close by Sept. 30, citing stable security. The timing is diplomatically loaded: the US loses its most significant formal military infrastructure in Iraq at exactly the moment the region is most volatile. Baghdad is not replacing it with anything equivalent, and Iraq is not choosing sides, which in this context amounts to choosing Iran's side on logistics.

• The Iran-US economic squeeze is now forcing third-country banking decisions. Treasury Secretary Scott Bessent confirmed that Turkey, Oman, and the United Arab Emirates (UAE) have halted flights from various Iranian airlines, and that banks in the UAE and Turkey have stopped transactions with Iran 5BBC Iran waiting for official US response after Trump rejects Hormuz deal, minister says. US official Jonathan Burke visited more than 50 countries with a simple ultimatum: trade with Iran or trade with Washington 6JPO US official gives ultimatum to nations in Middle East: Stop trade with Iran, or US will cut ties. Iran's president publicly acknowledged the sanctions are biting, while calling the US a "bully" 6JPO US official gives ultimatum to nations in Middle East: Stop trade with Iran, or US will cut ties. The combination of the maritime blockade and this financial isolation campaign is the most coordinated economic pressure on Iran since the Obama-era sanctions that preceded the 2015 nuclear deal.

• The Iran-Gulf nuclear backdrop got significantly more complicated. Classified US intelligence submitted to Congress assesses that Saudi Arabia has not abandoned nuclear weapons ambitions, according to a Washington Post report 11TTM US intelligence says Saudi Arabia has not abandoned its nuclear weapons ambitions. This lands alongside a 30-year US civil nuclear cooperation deal with Riyadh that does not require Saudi Arabia to sign the International Atomic Energy Agency (IAEA) Additional Protocol, depriving inspectors of snap access to undeclared sites. Twenty nonproliferation experts including former IAEA director general Hans Blix have written to Congress warning that covert weapons development would be "nearly impossible to detect" under these terms 11TTM US intelligence says Saudi Arabia has not abandoned its nuclear weapons ambitions. The US is simultaneously conducting a war it frames as preventing Iranian nuclear escalation while equipping its Gulf partner with infrastructure that, by its own intelligence community's assessment, could lead to a Saudi bomb. This contradiction is now in the congressional record.

• Iran's Persian Gulf Shipping Authority (PGSA) is threatening to blacklist vessels that transit via routes it has not approved. The PGSA statement warned that ships using "invalid routes" risk being added to a non-compliance list, barring all their future Hormuz passage 7MHR PGSA warns ships using invalid Hormuz routes. This is Iran formalising its administrative control over strait navigation. It is not just a military closure. It is a regulatory regime, and the PGSA is now asking international shipping companies to treat Iranian route approval as a legal requirement.

The market snapshot is from September 25, before Trump's public rejection and before the second drone seizure. Even so, the signal is clear. The Oil Volatility Index (OVX) at 55.09 is its highest point in this data set, up from 46.41 a month ago. Brent at $104.30 is elevated but has pulled back from the $108 spike driven by Hormuz deal optimism earlier in the week. The market was briefly pricing a deal. It is now un-pricing it, but not panicking, which suggests traders believe the channel stays open even if the proposal is rejected.

The number that keeps getting more alarming is the US 10-year Treasury yield at 5.184 percent, up from 4.666 just a month ago. That is the war's fiscal cost hardening into America's baseline borrowing rate. Defence stocks are still drifting lower from August levels, which is consistent with a market pricing a prolonged stalemate rather than a new offensive. Shipping stocks tell a different story: Frontline, the tanker operator, is up from $41.57 in August to $47.73. Someone is making money from the disruption.

The "Operation Economic Outcast" pressure campaign is now producing visible results in third countries that ordinary people will feel. Banks in the UAE and Turkey cutting Iranian transactions means trade finance for goods moving through those hubs gets harder and more expensive for everyone, not just Iran 5BBC Iran waiting for official US response after Trump rejects Hormuz deal, minister says. Burke's 50-country tour delivering the "trade with us or trade with them" ultimatum is reshaping regional supply chains that feed goods into European and Asian markets 6JPO US official gives ultimatum to nations in Middle East: Stop trade with Iran, or US will cut ties.

The Iraq coalition closure on September 30 is also a Western story. France and Spain are both members of the coalition losing its Iraq headquarters 10AAM Iraq says coalition headquarters to close by Sept. 30, citing stable security. European NATO members contributed personnel and political legitimacy to that operation. Their formal military footprint in the region shrinks at the end of this week, quietly, with almost no public discussion.