The Kremlin said on Friday that a summit between Russian President Vladimir Putin and Ukrainian President Volodymyr Zelenskyy could only happen as a final step to seal a peace deal.
Kremlin spokesman Dmitry Peskov said that it was unlikely that such a meeting could occur by the end of August, as Ukraine has proposed.
"A summit meeting can and should put the final point on a settlement and cement the modalities and agreements worked out by experts. It is impossible to do it the other way round," Peskov told reporters.
"Is it possible to go through such a complex process in 30 days? Well, obviously, it is unlikely."
A Ukrainian delegate said after the latest brief round of peace talks between the two countries on Wednesday that Kyiv had proposed a Putin-Zelenskyy meeting in August because that would fall within the 50-day deadline that US President Donald Trump had set last week for a deal.
Trump has threatened new sanctions on Russia and buyers of its exports unless an agreement is reached by early September.
Peskov once again described the two sides' negotiating positions as "diametrically opposed".
"It is unlikely that they can be brought together overnight. This will require very complex diplomatic work," he said.
India and China agreed to resume direct flights and step up trade and investment flows on Tuesday as the neighbours rebuild ties damaged by a 2020 border clash.
A Ukrainian drone attack late on Tuesday knocked out power to areas of Ukraine's Zaporizhzhia region under Russian control, the Moscow-installed governor said.
Israel is demanding the release of all 50 hostages held in Gaza, Israeli public broadcaster Kan cited the prime minister's office as saying on Tuesday, as talks on a proposed deal envisaging a 60-day truce and release of half the hostages continue.
U.S. President Donald Trump said on Tuesday he hoped Vladimir Putin was going to "be good" and move forward toward ending the war in Ukraine, but conceded it was possible the Russian president doesn't want to make a deal.
Aid worker killings rose nearly a third to almost 400 last year, the most deadly year since records began in 1997, and the conflict in Gaza is continuing to cause high death rates for humanitarian staff in 2025, U.N. and other data showed.