Yesterday we covered the flight itself: an unmarked US Air Force C-17 that appeared over Moscow, sat at Vnukovo for about eight hours, and went home. You can read that here — The Moscow Mystery Jet Carried the CIA Director.

The obvious question was never what landed. It was why the director of the Central Intelligence Agency needed to be in Moscow badly enough to go there in a cargo aircraft, and why nobody on the American side will say a word about it.

A day on, there are four serious answers in circulation. One of them has considerably better sourcing than the others.

What is actually established

Very little, and it is worth being precise about that. The flight is documented: tracked by Flightradar24, photographed on the ramp at Riga, and filmed arriving at Vnukovo, where the footage was geolocated using the preserved Tupolev Tu-104 that stands as a gate guard there.

Ratcliffe’s presence aboard is a different matter. CBS News broke it, followed by Axios, CNN, the Washington Post, NBC and Bloomberg — every one of them citing US officials who would not be named. No American official has confirmed the trip on the record. The CIA did not respond to requests for comment.

What we have on the Russian side is a shifting account. On the morning of the flight Peskov told reporters he had “no such information” and, asked whether talks with American envoys were scheduled that week, said flatly: “No, there are no such plans.” He later confirmed the visit to the Washington Post and described its purpose as contacts between security services. By 26 August he was confirming what had non happened: no meeting with Vladimir Putin.

Theory one: a warning about mobilisation

This is the best-sourced explanation and it comes from the Wall Street Journal, which reported that Ratcliffe travelled after American intelligence picked up indications that Russia was making early preparations for a possible new wave of military mobilisation, and had plans to test NATO’s resolve.

The timing fits. Russian parliamentary elections fall on 18–20 September, and Ukrainian officials have been warning for weeks that a mobilisation announcement would most likely come after them, not before. Peskov dismissed the mobilisation talk on 25 August as “information ducks”.

It also fits the shape of the trip. Eight hours on the ground, no presidential meeting, no announcement, no deliverable. That is not what negotiating looks like. It is what delivering a message looks like.

Theory two: restarting a peace process that has stopped moving

The Ukraine track is frozen. The core deadlock has not shifted in a year: Russia wants Ukrainian withdrawal from the Donbas, Ukraine wants the line frozen where it is. Geneva rounds in November and February produced nothing, and an Abu Dhabi round in March collapsed when the US–Israel–Iran war began.

Steve Witkoff and Jared Kushner remain the designated envoys, but their first-ever visit to Kyiv — planned around Ukraine’s Independence Day on 24 August — was postponed, and no date exists for a Moscow leg. When the diplomatic channel jams, governments use the intelligence channel. That is much of what intelligence channels are for.

Against it: Peskov’s own framing points at security-service business rather than diplomacy, and a one-day visit with no Putin meeting is thin ground for a breakthrough. Putin himself said on 22 August that proposals reaching Moscow were “sometimes, I would say, exotic in nature and are unacceptable”.

Theory three: Americans in Russian prisons

Ratcliffe personally negotiated the release of Ksenia Karelina in April 2025, and the CIA was central to the large multi-country exchange in 2024. Russia released former US Marine Robert Gilman unilaterally on 11 August. At least five Americans remain held, among them Stephen Hubbard, whom Washington designates as wrongfully detained.

Plausible as an agenda item. Weaker as the reason for the trip: prisoner exchanges are normally finalised on neutral ground, in Ankara or Abu Dhabi, precisely so that neither side has to be seen arriving in the other’s capital.

Theory four: Iran

The trip came a day after Treasury Secretary Scott Bessent launched a secondary-sanctions campaign against Iran. Russia supplies Iran with military equipment, a fact Sergei Lavrov has stated publicly. Named analysts have floated this, but they have flagged it as their own speculation, and no reporting connects it to the flight. Treat it as a possibility, not a finding.

CBS News, which broke the story of the CIA director’s presence in Moscow.

The precedent nobody in Washington will enjoy

There is one obvious historical rhyme, and it is not comforting. In early November 2021 CIA Director William Burns flew to Moscow at President Biden’s direction. He met Nikolai Patrushev and Sergei Naryshkin, and spoke to Putin by telephone from the Russian capital. His task was to convey American concern about the forces massing on Ukraine’s borders and to find out what they were for.

Russia invaded fifteen weeks later.

Before that, John Brennan went to Moscow in March 2016 to talk about Syria. Since 2022 the pattern has been different: senior American and Russian intelligence contacts have happened on neutral ground — Burns and Naryshkin in Ankara in November 2022, the 2024 exchange executed in Ankara, military channels reopened in Abu Dhabi.

Which is what makes this notable. When an American spy chief physically goes to Moscow rather than meeting halfway, the historical pattern is that he is carrying a warning the President wants delivered in person and deniably.

Why a cargo aircraft, and not a white-and-blue jet

This is the part that should interest anyone who follows aeroplanes. The United States has purpose-built VIP transports — the C-32A, a modified 757, and the C-37 Gulfstreams. A C-37B is exactly what carried an American delegation into Vnukovo in February 2025.

A C-17 was chosen instead, and there are three good reasons.

The first is that it can defend itself. The Globemaster carries a directional infrared countermeasures system along with flares and chaff. The executive jets do not.

The second is deniability, and it very nearly worked. Under a 2023 operational-security policy the Air Force stripped tail numbers and unit markings from a number of Air Mobility Command aircraft, and 07-7181 is one of them — plain grey, a small flag, a low-visibility roundel. A blue-and-white C-32 arriving at Vnukovo announces a cabinet-rank passenger before the airstairs come down. An unmarked grey airlifter reads as freight, and for the first hours of the flight most trackers assumed it was a routine embassy supply run. The cover held until someone photographed a C-40B parked beside it at Riga.

The third is self-sufficiency: a C-17 can carry the security detail, the communications equipment and the vehicles, with no dependence on Russian ground handling.

There is also a fourth possibility that has been widely repeated and is not established. Since March this year the Air Force has fielded the Roll-On Conference Capsule, a containerised senior-leader suite that turns a C-17 cargo bay into an airborne secure conference room, and which — unlike the old “Silver Bullet” trailers it replaced — is certified for occupancy during all phases of flight. The capsules are kept at Joint Base Andrews, and the aircraft routed through Andrews. That is suggestive. It is not evidence, and no photograph or statement places one aboard.

One more claim worth resisting: Russian outlets have reported this was the first C-17 in Moscow since 2017. That traces to a single unsourced item in a Telegram tabloid, with no date, airport or serial attached. What can be said is narrower — this was the second known US Air Force landing in Moscow since the full-scale invasion, and the first by a strategic airlifter.

The detail that says the most

Of everything reported in the past 48 hours, one item tells you more than the rest. According to Axios, the Kyiv Independent and the Financial Times — three outlets, all citing anonymous sources — the United States told Ukraine that a senior delegation was going to Moscow and asked Kyiv to pause strikes while it was there. Ukraine agreed, reportedly for 24 to 26 August.

The Ukrainian side was apparently not told at first who was on the aircraft. One Ukrainian source gave a reason for the request that is either dry or damning depending on your mood: “They don’t believe in the strength of Putin’s air defenses.”

Washington, in other words, thought a Ukrainian drone was a more credible threat to an American aircraft over Moscow than anything the Russian Air Force might do about it. That is not an official assessment. But it is the single most revealing sentence anyone has said about this flight.

Sources: Wall Street Journal, CBS News, Axios, Financial Times, Washington Post, RFE/RL, Kyiv Independent, Al Jazeera/AFP, Reuters, The War Zone, The Aviationist, AFLCMC, Flightradar24