CIA Director John Ratcliffe traveled secretly to Moscow this week to warn Russian officials against attacking NATO member states, according to people familiar with the mission, as Washington confronts intelligence assessments that President Vladimir Putin may be increasingly willing to test the alliance without deliberately starting a full-scale war.

Ratcliffe also raised Russia's relationship with Iran and warned of further economic pressure connected to the continuing disruption of commercial shipping through the Strait of Hormuz.

President Donald Trump publicly disputed that account of the mission, calling the trip "semi-routine" and saying it was not about either a potential Russian test of NATO or Iran.

The trip on Tuesday, August 25, was Ratcliffe's first publicly known visit to Russia since becoming CIA director and the first known Moscow visit by a serving CIA chief since William Burns traveled there in 2021, months before Russia's full-scale invasion of Ukraine.

The Kremlin confirmed that Ratcliffe held talks with Russian intelligence officials but said he did not meet Putin.

Kremlin spokesman Dmitry Peskov said Putin was briefed on the discussions afterward.

Moscow disclosed no details of what was discussed.

The mission was handled with unusual discretion.

Its existence became public after a U.S. government aircraft was tracked into Moscow and a diplomatic motorcade was seen moving through the Russian capital.

Washington also notified Kyiv that an American delegation would be in Russia and asked Ukraine to suspend strikes against Moscow, St. Petersburg and some northern areas while the delegation was present, according to a senior Ukrainian official.

Ukrainian operations elsewhere in Russia were not covered by the request.

The NATO warning reflects a broader concern inside the U.S. intelligence community that Putin's tolerance for risk may be increasing.

Recent assessments have considered the possibility that Russia could authorize operations extending onto NATO territory while remaining below the threshold of an unmistakable conventional invasion.

Officials have identified cyberattacks, sabotage, covert operations and other deniable or limited actions as possible ways Moscow could probe whether NATO governments remain politically united and whether the Trump administration would respond decisively to pressure against an ally.

Those concerns have been reinforced by a series of incidents along NATO's eastern flank and elsewhere in Europe.

NATO formally condemned recent Russian airspace violations involving Poland and Romania and said the episodes demonstrated an increasing Russian tolerance for risk.

Romania has also dealt with drone incidents close to its territory and critical Black Sea infrastructure, while European governments have been investigating suspected sabotage, cyber operations and other covert activity attributed to Russia.

Moscow has denied involvement in a number of alleged sabotage operations.

The distinction between a deliberate invasion and a limited test is crucial because NATO's Article 5 treats an armed attack against one member as an attack against the alliance.

The provision does not prescribe an identical military response from every country, but obliges allies to assist the attacked member with action each considers necessary.

It was invoked for the first and so far only time after the September 11, 2001 attacks on the United States.

A deliberately ambiguous Russian operation could therefore be designed to create political disagreement over whether the threshold for collective defense had been crossed.

Ratcliffe's reported warning consequently appears aimed not only at preventing a conventional Russian attack but also at reducing the risk that Moscow might miscalculate how Washington and other allies would respond to a smaller provocation.

Trump has repeatedly criticized NATO countries over defense spending and burden-sharing, while also maintaining that the United States supports the alliance.

Questions over American resolve are therefore a central element of the intelligence concern about any Russian attempt to probe NATO unity.

Iran formed a second strand of Ratcliffe's talks.

Russia and Iran have deepened military and intelligence cooperation during the wars in Ukraine and the Middle East.

Earlier this year, U.S. officials assessed that Moscow was providing Tehran with information about American military positions in the region.

Iran, in turn, has supplied Russia with Shahed attack-drone technology and helped establish domestic production of Iranian-designed drones inside Russia.

Ratcliffe reportedly warned during the Moscow meetings that additional sanctions could follow if commercial traffic through the Strait of Hormuz is not restored.

The strategic waterway, through which a substantial share of global oil and liquefied-natural-gas trade normally passes, has been severely disrupted during the Iran conflict.

Iran and Oman are now discussing arrangements for a temporary commercial shipping corridor and mine clearance, but traffic remains far below normal levels and the terms of any lasting reopening remain unresolved.

Trump offered a markedly different public description of Ratcliffe's mission.

Asked directly about speculation that the CIA director had gone to Moscow over NATO or Iran, the president said "none of the above" and characterized the trip as "sort of semi-routine." He nevertheless suggested the meetings could produce something and immediately pointed to his administration's efforts to end Russia's war against Ukraine.

The two accounts are not necessarily mutually exclusive in every respect: an intelligence-channel meeting can cover several issues while its most sensitive messages remain undisclosed publicly.

What is confirmed is that Ratcliffe held direct talks with Russian intelligence officials, that Putin was briefed afterward, and that the meeting occurred during heightened concern over Russian activity around NATO territory, stalled efforts to end the Ukraine war and continuing confrontation over Iran and the Strait of Hormuz.

The immediate test will be whether those private warnings are followed by any measurable change in Russian behavior or by further U.S. diplomatic, military or economic action.