Russia's foreign minister has claimed that Ukraine tried to attack Vladimir Putin's residence in the country's north using long-range drones.
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.
Russian Foreign Minister Sergei Lavrov said air defence systems shot down the aerial attack and no one was injured.
He added that the country's negotiating position on a peace deal would change as a result.
"Such reckless actions will not go unanswered," Mr Lavrov was quoted as saying.
Mr Lavrov appeared in televised remarks not to have offered any evidence for his assertions.
It was not clear where Mr Putin was at the time.
[MAP]Ukraine's President Volodymyr Zelenskyy responded quickly to the claims, describing them as "another round of lies."
He told reporters by WhatsApp that Russia was trying to undermine progress made in Ukraine-US peace talks at the weekend.
He added that Russia was preparing to strike government buildings in the country's capital, Kyiv.
[VZ TWEET]White House spokeswoman Karoline Leavitt said shortly after the claims that US President Donald Trump had concluded a "positive call" with Russia's Vladimir Putin concerning the war in Ukraine.
Ukraine's leader met with his American counterpart at the weekend to discuss a peace deal for the war in Ukraine.
Mr Zelenskyy said a draft peace framework to end Russia's war envisages 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 near-four year war would be divided 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
