US Envoys Shuttle Between Moscow and Kyiv in Most Intense Diplomatic Push of the War

US negotiators Jared Kushner and Steve Witkoff arrived in Kyiv by train on Sunday 6 September 2026 for talks with President Volodymyr Zelenskyy aimed at ending the war with Russia. The visit came one day after they met Vladimir Putin in the Kremlin for a three-hour session The Guardian. The back-to-back Moscow-Kyiv trip is the most concentrated round of shuttle diplomacy — a format where an intermediary travels between two parties who won't sit in the same room — between the two capitals since Washington and Kyiv put forward a 20-point peace plan in December 2025.

Witkoff called the Kyiv talks "very constructive and substantive" and said they would continue "for as long as it lasts." Kushner described the conflict as "a long, hard and emotional war" and noted that his team was in almost daily contact with Ukrainian officials. Those involved also described the discussions as "encouraging" PBS.

The Kremlin characterised the US envoys' talks with Ukraine as useful but gave no sign of a breakthrough Reuters.

The logistics of the visit reflected the danger on the ground. Kushner and Witkoff arrived by train because Russia had bombed Kyiv's two main airports on Friday 4 September. A Russian drone also struck the headquarters of Ukraine's SBU intelligence agency that same day, a few hundred metres from Sophia Square, where Zelenskyy greeted the US envoys in front of Kyiv's historic St. Sophia Cathedral. Both Russia and Ukraine pledged to refrain from attacking each other's capitals over the weekend to ensure the envoys' safe passage.

A notable development from the Kyiv session was the widening of the format. The British, French, and German national security advisers briefly joined the 6 September talks. Zelenskyy announced plans to broaden peace discussions to include European countries, saying he wanted to do everything to ensure trilateral meetings — involving three parties — take place with Ukraine, the US, and Europe. Witkoff said he was hopeful that trilateral US-Ukraine-Europe meetings would be announced "in short order."

The push toward a trilateral format is a structural shift in a negotiation track that has, until now, been mostly bilateral between Washington and Kyiv, with Moscow engaged separately. The December 2025 20-point peace plan, jointly put forward by the US and Ukraine, has been the framework around which talks have been organised. Earlier in the year, the US, Russia, and Ukraine were set to hold their first trilateral peace talks in Abu Dhabi, and Witkoff indicated in January that the negotiations had narrowed to a single remaining issue Al Jazeera. The fact that nine months later the process has expanded to include European powers suggests either that the narrow gap could not be bridged on a bilateral basis, or that Washington and Kyiv concluded that any durable settlement would need European security commitments built into the negotiation itself.

Zelenskyy also raised the prospect of a "winter package" from the US and Europe to help Ukraine withstand another season of fighting. The discussions covered air defence, energy support, and what Zelenskyy described as the serious use of American LNG (liquefied natural gas — gas cooled to liquid form for easier shipping). The inclusion of LNG in a peace-process meeting links the diplomatic track to energy security, an area where US exports have played a growing role in replacing Russian gas supplies to European markets.

The sustained engagement between Kushner, Witkoff, and Zelenskyy stretches back to at least December 2025, when the two sides held a phone call, and continued through preparatory discussions in February 2026 ahead of trilateral meetings in Geneva, and again in June 2026 President of Ukraine. Zelenskyy publicly announced the envoys' planned Moscow-Kyiv itinerary on 4 September 2026 President of Ukraine.

The broader context here is that several elements set the September round apart from earlier iterations. The weekend shuttle, conducted with reciprocal de-escalation commitments on both capitals, signals that Moscow and Kyiv are both willing to create a protected diplomatic corridor when Washington demands it. The entry of British, French, and German national security advisers into the talks, even briefly, opens the door to a format in which European security guarantees are no longer an afterthought to a US-brokered deal but a component of the negotiation itself. And the linking of a winter assistance package to the peace track suggests that humanitarian and energy support are being treated as leverage within the broader diplomatic process rather than as separate aid channels.

Whether the Kremlin's muted assessment or Witkoff's optimism proves closer to reality will depend in part on whether the promised trilateral format materialises, and whether the 20-point framework can absorb European participation without fracturing the progress already made.