Ukrainian President Volodymyr Zelenskyy has denied Moscow's allegations that Kyiv launched a drone attack on one of Russian President Vladimir Putin's homes.
Russian Foreign Minister Sergei Lavrov had claimed Kyiv had launched an attack using 91 long-range drones on Mr Putin's state residence in Russia's Novgorod region, in the north-west of the country.
As a result, Mr Lavrov said Russia would review its position on peace negotiations following what had been described as progressive talks between the US and Ukraine in Florida on Sunday, local time.
Mr Zelenskyy dismissed the claims as "another round of lies from the Russian Federation".
"It is clear that we had a meeting with Trump yesterday, and it is clear that for the Russians, if there is no scandal between us and America, and we are making progress — for them it is a failure, because they do not want to end this war," he told reporters via WhatsApp.
"I am sure they are simply preparing the ground for strikes, probably on the capital, probably on government buildings."
Interfax and TASS news agencies reported on Monday, local time, that Kyiv had used 91 drones in the attack on the property in the Novgorod region.
Mr Lavrov said air defence systems shot down the aerial attack and no-one was injured, but added that "such reckless actions will not go unanswered".
[MAP]He appeared in televised remarks not to have offered any evidence for his assertions.
It was not clear where Mr Putin was at the time.
Trump 'very angry'
US President Donald Trump said Mr Putin had told him about the alleged attack via phone following Mr Trump's meeting with Mr Zelenskyy the previous day.
The Ukrainian and US leaders met at Mr Trump's Mar-a-Lago club in Florida to discuss a peace deal to end the Russia-Ukraine war.
[VZ TWEET]"I don't like it. It's not good," Mr Trump told reporters when asked if he was worried the allegation could impact his efforts to broker peace.
"I learned about it from President Putin today. I was very angry about it.
"It's a delicate period of time. This is not the right time. It's one thing to be offensive, because they're offensive. It's another thing to attack his house. It's not the right time to do any of that."
When asked if there was any evidence of such an attack, Trump said: "We'll find out."
He described his call with Mr Putin as a "very good talk", but said there were "a few very thorny issues" to address in the peace negotiations.
Mr Zelenskyy told reporters that a draft peace framework to end Russia's war envisaged US security guarantees for Ukraine for 15 years, although he has asked for up to 50 years.
Among the other points of contention between Russia and Ukraine is how territory captured by either side in their nearly four-year war would be divided up as part of a peace agreement.
Mr Zelenskyy said two main issues outlined in a 20-point peace proposal remained to be resolved: control of Ukraine's Zaporizhzhia nuclear power station, which is in Russian hands, and the fate of the Donbas area of eastern Ukraine.
ABC/wires
