Russian President Vladimir Putin said Ukraine's counteroffensive "has failed" as he hosted Belarusian leader Alexander Lukashenko, his close ally, for talks in St Petersburg on Sunday.
"There is no counter-offensive," Russian news agencies quoted Lukashenko as saying.
Putin replied: "It exists, but it has failed."
Ukraine began its long-anticipated counter-offensive last month but has so far made only small gains against well entrenched Russian forces who control more than a sixth of its territory after nearly 17 months of war.
US General Mark Milley, chair of the Joint Chiefs of Staff, said on Tuesday the Ukrainian drive was "far from a failure" but would be long, hard and bloody.
A Telegram channel linked to Lukashenko quoted him as saying in a jocular tone that fighters of Russia's Wagner mercenary group who are now training Belarus's army were keen to push across the border into NATO member Poland.
"The Wagner guys have started to stress us - they want to go west. 'Let's go on a trip to Warsaw and Rzeszow'," he was quoted as saying. There was no indication that Lukashenko was seriously entertaining that idea.
Poland is moving extra troops towards the border with Belarus in response to the arrival of Wagner forces who relocated there after a short-lived mutiny in Russia last month.
Pakistan said it launched strikes on targets in Afghanistan after blaming recent suicide bombings, including assaults during the holy month of Ramadan, on fighters it said were operating from its neighbour's territory.
One police officer was killed and 24 other people were injured after several explosive devices detonated at midnight in Lviv in western Ukraine, the National Police said on Sunday.
President Donald Trump said on Saturday he will raise a temporary tariff from 10 per cent to 15 per cent on US imports from all countries, the maximum level allowed under the law, after the US Supreme Court struck down his previous tariff programme.
The move came less than 24 hours after Trump announced a 10% across-the-board tariff on Friday after the court's decision. The ruling found the president had exceeded his authority when he imposed an array of higher rates under an economic emergency law.
The new levies are grounded in a separate but untested law, known as Section 122, that al
Hong Kong proposes to spend about HK$4 billion ($512 million) to buy out the owners of homes in a high-rise housing complex ravaged by a massive fire to resettle nearly 2,000 affected households.
The US Supreme Court struck down Donald Trump's sweeping tariffs that he pursued under a law meant for use in national emergencies, handing a stinging defeat to the Republican president in a landmark opinion on Friday with major implications for the global economy.