ISTANBUL — The primary indicators of great progress in peace talks between Russia and Ukraine emerged on Tuesday, however there was no trace of an imminent finish to the struggling, with Russia showing decided to seize extra territory in japanese Ukraine and officers predicting that weeks of additional negotiation have been wanted.

After three hours of talks in Istanbul, Ukrainian officers mentioned their nation was able to declare itself completely impartial — forsaking the prospect of becoming a member of NATO, a key Russian demand — and talk about Russian territorial claims in trade for “safety ensures” from a bunch of different nations. An aide to Ukraine’s president referred to as the Russian delegation “constructive,” whereas Russia mentioned it might “drastically” reduce its army exercise round Kyiv to “improve mutual belief.”

Russia’s assertion that it’s going to de-escalate the preventing round Kyiv — even because it retains pounding different components of Ukraine — could also be little greater than placing a constructive gloss on its army being stymied in its makes an attempt to grab or encircle the capital. In latest days, Ukrainian counteroffensives across the metropolis have compelled again Russian forces in among the fiercest road battles of the warfare, although they continue to be inside putting distance of Kyiv.

Now, Russian officers mentioned, the objective might be to take extra territory in Ukraine’s japanese Donbas area, the place Russia has put in two separatist statelets that President Vladimir V. Putin acknowledged final month as unbiased, however that no different nation has formally acknowledged.

Western officers and safety analysts cautioned towards taking at face worth Russia’s statements about its goals in Kyiv or elsewhere.

President Biden mentioned he wouldn’t draw any conclusions about Russia’s intentions “till I see what their actions are.” Talking after a White Home assembly with the prime minister of Singapore, Mr. Biden added, “We’ll see in the event that they comply with by way of with what they’re suggesting.”

“Within the meantime,” Mr. Biden mentioned, “we’re going to proceed to maintain robust the sanctions and can proceed to supply the Ukrainian army with the capability to defend themselves.”

Secretary of State Antony J. Blinken, on a diplomatic journey to Morocco, advised reporters, “There may be what Russia says and there’s what Russia does,” including, “and what Russia is doing is the continued brutalization of Ukraine and its individuals.”

President Volodymyr Zelensky of Ukraine has labored laborious to current Mr. Putin with a negotiated approach to finish the warfare, accompanied by Ukrainian concessions that might not go as far as to make his nation a Russian satellite tv for pc.

The provide to declare a everlasting impartial standing, Ukrainian officers in Istanbul mentioned, means it might neither be a part of the NATO alliance nor host overseas troops — a state of affairs that Mr. Putin used as one of many justifications for his invasion.

Ukrainian officers envision an association by which a various group of nations — probably together with america, Germany, Turkey and China — would commit, if Ukraine have been attacked, to offering it with army help and to imposing a no-fly zone if crucial. It was not clear that any of these nations had signed on to such ensures.

“That is most likely the most effective final result that might’ve been hoped for right now,” mentioned Samuel Charap, who research Russian overseas coverage on the RAND Company. “The Ukrainians have no less than give you one thing concrete to deal with the core Russian demand for Ukraine’s neutrality.”

Ukraine additionally signaled readiness to think about concessions associated to the components of its territory already occupied by Russia. It proposed a 15-year negotiating course of for Crimea, the Ukrainian peninsula seized by Russia in 2014, and mentioned it was able to rule out making an attempt to retake it by drive. Questions surrounding the japanese Donbas area, Ukrainian officers mentioned, might be mentioned at a attainable assembly between Mr. Putin and Mr. Zelensky.

Russia, for its half, mentioned it was ready to speed up planning for such a summit assembly — one thing that Mr. Zelensky had lengthy sought and that Moscow had resisted, casting Ukraine’s authorities as a mere puppet of Washington. However now, the Kremlin seems to be more and more ready to cope with Mr. Zelensky — partly as a result of Ukraine’s resistance on the battlefield is leaving it no different alternative.

Vladimir Medinsky, the top of Russia’s delegation, mentioned that he seen Ukraine’s proposals as “a constructive step within the seek for a compromise.”

“If the treaty is labored out rapidly and the required compromise is discovered, the potential of making peace might be a lot nearer,” Mr. Medinsky mentioned.

Ukraine and Russia would wish no less than two extra weeks for talks with Russia and potential guarantor nations, Oleksandr Chalyi, a member of the Ukrainian delegation, advised reporters after Tuesday’s session. Turkey mentioned it was ready to host a gathering of the Russian and Ukrainian overseas ministers to flesh out Tuesday’s talks, adopted by a attainable assembly between the 2 presidents.

“You’ve shouldered a historic accountability,” President Recep Tayyip Erdogan of Turkey, who hosted Tuesday’s talks at a Nineteenth-century Ottoman palace on the banks of the Bosporus, advised the Russian and Ukrainian delegates. “All of the world is anticipating excellent news from you.”

Turkey has emerged as a pivotal middleman within the talks, one of many few nations to keep up shut ties to each Russia and Ukraine after the invasion. Although it’s a NATO member, Turkey has refused to place in place sanctions towards Russia, even because it provides army assist to Ukraine. To underscore the latter, a member of the Ukrainian delegation, Mykhailo Podolyak, posted on Twitter on Tuesday a selfie with Haluk Bayraktar, a detailed affiliate of Mr. Erdogan and the top of a Turkish firm that makes armed drones utilized by Ukraine.

However regardless of the constructive indicators, myriad diplomatic pitfalls remained. For instance, Ukraine mentioned that the worldwide safety ensures wouldn’t apply to the disputed Donbas, however it isn’t clear how that space could be outlined; the separatists declare much more territory than they managed earlier than the warfare.

“The Russian delegation is constructive,” Mr. Podolyak, who’s an aide to Mr. Zelensky, mentioned. “This doesn’t imply that the negotiations are simple. They’re tough.”

There was additionally no reprieve on the bottom in Ukraine. On Tuesday morning, a Russian cruise missile strike destroyed a part of the primary regional authorities workplace constructing within the southern metropolis of Mikolaiv, killing no less than 9 individuals and injuring no less than 28, Ukrainian officers mentioned.

It was one in all many assaults for the reason that Feb. 24 invasion that appeared geared toward disabling authorities operations; the regional administrator, Vitaly Kim, mentioned his personal workplace was destroyed, however he was not within the constructing on the time. The Russian advance alongside the Black Coastline west of Crimea stalled outdoors Mikolaiv, in an space that has seen intense fight.

One other Russian missile struck an oil depot on Monday night time within the Rivne area in northwestern Ukraine, the second to be destroyed there, in response to the regional administrator.

“The size of the challenges has not diminished,” Mr. Zelensky mentioned in an announcement. “The Russian military nonetheless has important potential to proceed assaults towards our state. They nonetheless have numerous gear and sufficient individuals utterly disadvantaged of rights whom they will ship to the cauldron of warfare. Subsequently, we keep alert and don’t cut back our protection efforts.”

The U.S. and British governments confirmed Ukrainian positive aspects in cities round Kyiv — notably Irpin, scene of among the fiercest road preventing — however suggested skepticism about claims that Russia’s stance had modified.

“Has there been some motion by some Russian items away from Kyiv within the final day or so? Yeah, we predict so, small numbers,” mentioned John F. Kirby, the Pentagon spokesman. However, he added, “We imagine that it is a repositioning, not an actual withdrawal, and that we ought to be ready to observe for a significant offensive towards different areas in Ukraine.”

The British Defense Ministry warned that “Russia nonetheless poses a major menace to town by way of their strike functionality.”

Russia has signaled that it was narrowing its warfare goals to concentrate on taking extra territory within the Donbas. Sergei Ok. Shoigu, the Russian protection minister, on Tuesday supplied a attainable justification for winding down the warfare effort elsewhere within the nation by declaring, in televised remarks in Moscow, that Russia’s preliminary mission was achieved.

“Normally, the primary targets of the primary stage of the particular operation have been accomplished,” Mr. Shoigu mentioned. “The fight potential of the Ukrainian Armed Forces has been considerably lowered, which makes it attainable to focus the primary consideration and predominant efforts on reaching the primary objective — the liberation of Donbas.”

Russian forces have taken management of a land bridge alongside Ukraine’s southeastern coast linking Crimea to the Donbas. The lone holdout in that strip is the middle of the devastated port metropolis of Mariupol, the place, the Institute for the Research of Struggle reported on Tuesday, the Russians are nonetheless gaining floor, slowly tightening the noose across the fighters and civilians who stay.

Thousand of civilians have been killed in Mariupol, in response to native officers — a declare that can’t be independently verified — and far of town has been flattened. It stays beneath “steady heavy shelling” by Russian forces, the British Protection Ministry mentioned on Tuesday.

Within the close by port of Berdyansk, captured by the Russians, an evacuation convoy took 34 buses stuffed with civilians out of town, headed into territory held by Ukraine. In anther occupied metropolis within the area, Melitopol, the mayor mentioned the faculties chief had been detained after she and native lecturers refused orders by the occupying forces to alter what was taught and to show in Russian, not Ukrainian.

The warfare has price Ukraine $564.9 billion in harm and misplaced financial exercise — roughly 3 times its prewar gross home product — Yulia Svyrydenko, the financial system minister, mentioned in a Fb publish on Monday.

There are as but no dependable estimates of civilian casualties, and a few 4 million individuals have fled the nation, together with about six million who’re internally displaced, in response to the United Nations.

Reporting was contributed by Ivan Nechepurenko and Safak Timur from Istanbul; Megan Specia from Krakow, Poland; Michael D. Shear from Washington; and Lara Jakes from Rabat, Morocco.