Vladimir Putin has issued a chilling warning to Ukraine in a personal phone call with Donald Trump.
The two leaders spoke down the line on Wednesday, Trump said.
And during the conversation, Putin told his American counterpart that his country "will have to" respond to Ukraine's recent mass drone attack on Russian soil.
"The call lasted approximately one hour and 15 minutes," Trump revealed in a Truth Social post.
REUTERS
|The two leaders spoke down the line on Wednesday, Trump said (file photo)
"We discussed the attack on Russia's docked airplanes by Ukraine, and also various other attacks that have been taking place by both sides.
"It was a good conversation, but not a conversation that will lead to immediate peace," he warned.
The Kremlin, via Russian state news agency Tass, confirmed the call had taken place a few minutes after Trump's post.
Also on the agenda was Iran, with the Commander-in-Chief telling his followers he "stated to President Putin that Iran cannot have a nuclear weapon".
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MAXAR VIA REUTERS
|'Putin did say, and very strongly, that he will have to respond to the recent attack on the airfields,' Trump said
"On this," Trump added, "I believe that we were in agreement."
He continued: "President Putin did say, and very strongly, that he will have to respond to the recent attack on the airfields."
On Sunday, Ukraine revealed that 40 Russian military aircraft had been struck in an extraordinary drone attack.
Ukrainian authorities later revised that number to 41, and confirmed that 117 drones were involved.
REUTERS | On Sunday, Volodymyr Zelensky's Ukraine revealed that 40 Russian military aircraft had been struck in an extraordinary drone attack
Volodymyr Zelensky's security service, the SBU, said: "Enemy strategic bombers are burning en masse in Russia.
"A significant part of them is irretrievably destroyed, and some damaged aircraft will take many years to rebuild."
The regional governor of Russia's eastern Irkutsk region, Igor Kobzev, also confirmed that drones attacked a military unit in the Sredny settlement.
It was the first such attack in Siberia, and "the source from where the drones were fired has already been blocked".
On Wednesday, but before the Putin-Trump call, Russian officials vowed that military options were "on the table" for its response to the attacks, and accused the West of being involved.
REUTERS
|British and American officials have consistently stressed they had no prior knowledge of the weekend attacks
Russia also urged the US and Britain to restrain Ukraine after the attacks.
But Ukrainian officials have hailed them as proof Kyiv can still fight back after more than three years of war.
British and American officials have consistently stressed they had no prior knowledge of the weekend attacks on Russian nuclear-capable long-range bombers.