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.
Ukrainian President Volodymyr Zelenskyy marked Independence Day on Sunday alongside Canadian Prime Minister Mark Carney, who said Ukraine would receive more than C$1 billion ($723 million) in military aid from a previously announced package next month.
Israeli planes and tanks pounded the eastern and northern outskirts of Gaza City overnight Saturday to Sunday, destroying buildings and homes, residents said, as Israeli leaders vowed to press on with a planned offensive on the city.
The Pentagon is working on plans to deploy the US military to Chicago as President Donald Trump says he is cracking down on crime, homelessness and undocumented immigration, the Washington Post reported on Saturday.
Thousands of Australians joined pro-Palestinian rallies on Sunday, organisers said, amid strained relations between Israel and Australia following the centre-left government's decision to recognise a Palestinian state.
North Korean leader Kim Jong Un supervised the firing of new air defence missiles to test their combat capability, state media KCNA reported on Sunday.
Access to Dubai International Airport's Terminal 1 is set to improve under a new contract awarded by Dubai's Roads and Transport Authority (RTA) to widen the existing bridge from three to four lanes.
The UAE Cyber Security Council (CSC) has warned of the serious risks posed by using unsecured, free public Wi-Fi networks, revealing that more than 12,000 breaches have been recorded through such networks since the beginning of the year.