U.S. Secretary of State Marco Rubio said Thursday that Russia’s war in Ukraine has settled into a “dangerous stalemate,” framing the conflict as a race between battlefield attrition and diplomacy before Ukrainian negotiators fly to the United States for another round of talks with President Donald Trump’s envoys.

Rubio spoke to reporters during a visit to Portugal, hours after a Russian glide-bomb strike killed at least 30 people on two commuter buses in Kramatorsk and as Kyiv reported fresh casualties in the capital. The juxtaposition underscored his warning that without a negotiated settlement, tit-for-tat strikes could widen beyond Ukraine’s borders.

Stalemate and escalation risk

“This war needs to end in a negotiated settlement. The sooner, the better,” Rubio said, according to remarks carried by Al Jazeera and other outlets. He added that Washington would keep trying to facilitate an agreement but would not “invest in pointless processes” if no progress is possible.

Rubio described the current moment as fragile. Escalation, he said, “could wind up being a sabotage campaign in neighbouring countries that are members of NATO,” or other steps that “could quickly turn what is a war between two countries into a much broader and far more dangerous regional conflict.”

The comments stopped short of announcing new U.S. military aid or sanctions. They instead placed weight on diplomacy at a time when both sides are stretching long-range strike capabilities—Ukraine claimed hits on a Yandex data centre and an industrial zone in Omsk, while Russia pressed attacks on civilian transport nodes near the Donetsk front.

Miami talks on the calendar

Ukrainian President Volodymyr Zelenskyy confirmed that his negotiating team would meet Jared Kushner and Steve Witkoff in the United States on Friday, with talks expected to run through Saturday. Zelenskyy said the delegation would include his chief of staff, Kyrylo Budanov; foreign intelligence chief Rustem Umerov; first deputy head of the presidential office Sergiy Kyslytsya; and parliamentary faction leader David Arakhamia.

He added that Ukraine was counting on European partners to join the negotiating group. Kushner and Witkoff travelled to Moscow and Kyiv last month; Zelenskyy has said Washington hoped to broker another Ukraine-Russia meeting by the end of October, while the Kremlin has publicly left room for three-way talks in October without detailing outcomes.

Previous rounds have produced no durable ceasefire. Rubio’s emphasis on a “permanent, enduring, and fair” settlement reflects continued U.S. pressure for a deal even as front-line cities such as Kramatorsk absorb some of the heaviest civilian losses in months.

What changes next

For the Biden-successor administration, the Miami session is a test of whether personal envoy diplomacy can move positions after mass-casualty strikes. Ukrainian officials are likely to press for air-defence and long-range capabilities while seeking clearer security guarantees; Russia, meanwhile, has given no sign it will ease attacks on logistics hubs.

Rubio did not set deadlines. His stalemate language, however, signals that the State Department sees the war as stuck—not frozen— with each new strike raising the odds of a mistake that draws in NATO allies. All eyes now turn to whether Friday’s meetings produce terms both capitals can sell at home, or another interval of fighting while negotiators regroup.