Geostrategic Daily

The Maritime Executive · 28 September 2026

The Caspian Sea is Busy Between Russia and Iran

The US naval blockade of Iran's southern ports appears to be nearly 100 percent effective, cutting goods flows through Bandar Abbas and other Gulf and southern coast ports that used to handle 80 percent of Iran's trade, while air traffic to the outside world has also largely been cut. With road crossings from Iraq, Turkey, Azerbaijan and Armenia facing capacity problems, including as many as 1,800 trucks queuing at the Norduz crossing into Armenia, the text identifies two remaining options for heavy cargo: rail connections through Turkmenistan and Caspian Sea shipping, principally to Russia. Iranian Caspian ports previously handled about 10 percent of Iran's trade, the governor of Gilan said volumes rose 50 percent from March to August, and ship tracking shows about eight vessels a day moving between Astrakhan and Makhachkala and Bandar-e Anzali and Amirabad.

Why it matters: It shows how blockade and sanctions pressure push trade onto longer, lower-capacity corridors, the central dynamic of the trade-and-logistics theme.

chokepoint infrastructure · sanctions export controls · great power rivalry

Record

Source
The Maritime Executive (tier 1)
Published
28 September 2026
Link
https://maritime-executive.com/article/the-caspian-sea-is-busy-between-russia-and-iran
Content depth
full
Regions
europe-eurasia-mena
Subregions
gulf, caucasus-central-asia
Actors
US, Iran, Russia, China
Edition
2026-09-29

Grounding

Verbatim spans from the source text that support the summary above.

The US naval blockade of Iran’s southern ports appears to be nearly 100 percent effective
The governor of the northern Iranian province of Gilan has said that from March to August this year volumes had increased by 50 percent.
on average there are about eight vessels visible every day on AIS moving between the principal ports of Astrakhan and Makhachkala in Russia, and Bandar-e Anzali and Amirabad in Iran