Putin says Ukraine border security zone is not negotiable

President Vladimir Putin said on Friday that Russia is building a security zone inside Ukraine along their border and that the zone will not be a subject for potential peace negotiations with Ukraine.

Putin wore military uniform and spoke during a visit to a command post, in televised comments to senior officers. He linked the operation to Ukraines 2024 to 2025 incursion into Russias western Kursk region.

Putin said Russian forces were tasked not only with expelling Ukrainian forces from Russian land but also with establishing a security zone in adjacent territory, and that the task is being carried out successfully. He said the goal is the absolute security of Russias border regions.

Size and control of the zone

Kremlin spokesman Dmitry Peskov said the planned zone spans 660 kilometres, or 410 miles. He said 70 percent of it is currently under Russias control. He did not say how deep it would reach inside Ukraine.

The depth question is central. A long zone along the border could cover a narrow strip or a much wider area, and Peskov left that point open on Friday. The length and the share under Russian control were the only figures he gave.

Reporting noted Putin had spoken before about the need for such a zone but had not previously set out its planned extent or said it would be off limits for talks. Fridays comments added both points at once: a stated length, and a refusal to place the zone on a negotiating table.

Land in Sumy and Kharkiv

The zone requires Russia to carve out land in Ukraines Sumy and Kharkiv regions. Those regions are not among the territories Russia has claimed as its own since launching the war in 2022.

That distinction raises the stakes of Putins statement. If the zone is not open to negotiation, Russia is presenting control of land in Sumy and Kharkiv as a settled aim, separate from the territories it has already claimed.

Putin framed the operation as a response to the Kursk incursion. Ukraine entered Russias western Kursk region in 2024, and the fighting there ran into 2025. In Putins account, the zone is meant to prevent a repeat and to protect Russian border regions.

Other battlefield claims

Putin also said Russian forces had yet to capture just over 10 percent of the territory of Ukraines Donetsk region, a key objective, and 16.5 percent of the Zaporizhzhia region. Those figures were Putins own account of the remaining shares.

Donetsk has long been a central objective in the war. Putins numbers present Russian forces as holding most of the region, with a small share still to take. He gave a larger remaining share for Zaporizhzhia.

Reporting placed the comments one week after a deal to sell Russian diesel to the United States that prompted a fresh souring between President Donald Trump and Ukrainian President Volodymyr Zelenskiy. That timing puts Putins remarks in a week when relations between Washington and Kyiv were already under strain.

What it means for talks

By declaring the zone off limits before any talks begin, Putin narrowed the ground that a future negotiation could cover. Ukraine would be asked to discuss peace while Russia treats a 660 kilometre border zone inside Ukraine as settled.

No depth figure, no timetable and no Ukrainian response were set out in Fridays reporting. What was clear was the direction: a zone first described as a need is now described with a length, a level of control, and a line that it will not be negotiated.