In a rare interview with a foreign media organisation, Kremlin spokesman Dmitry Peskov told Sky News that Russia would react “very negatively” if Ayatollah Ali Khamenei was killed.
The comments came as US President Donald Trump said he will decide within two weeks whether America will join Israel’s military campaign against Tehran, after earlier speculating on social media about killing the Iranian leader.
“The situation is extremely tense and is dangerous not only for the region but globally,” Mr Peskov said in an interview at the Constantine Palace in Saint Petersburg.
“An enlargement of the composition of the participants of the conflict is potentially even more dangerous.
“It will lead only to another circle of confrontation and escalation of tension in the region.”
They are the Kremlin’s strongest comments yet regarding the Israel-Iran conflict, which has stoked fears in Moscow that it could be on the verge of losing its closest ally in the Middle East.
Russia has deepened its ties with Iran since invading Ukraine, and the two countries signed a strategic partnership in January.
“[Regime change in Iran] is unimaginable. It should be unacceptable, even talking about that should be unacceptable for everyone,” Mr Peskov said, in a thinly veiled reference to Washington.
But Mr Peskov refused to be drawn on what action Russia would take if Khamenei was killed, saying instead it would trigger action “from inside Iran”.
“It would lead to the birth of extremist moods inside Iran and those who are speaking about [killing Khamenei], they should keep it in mind. They will open the Pandora’s box.”
Vladimir Putin’s offers to mediate an end to the conflict have so far been rejected by Mr Trump, who said on Wednesday that he told the Russian president to “mediate your own [conflict]”, in reference to Russia’s war against Ukraine.
Mr Peskov denied the American president’s words were insulting, adding: “Everyone has a different language.
“President Trump has his own unique way of speaking and his unique language. We are quite tolerant and expect everyone to be tolerant of us.”
The Trump administration’s own mediation efforts to end the war in Ukraine have failed to yield any major breakthroughs, despite two rounds of direct talks between Moscow and Kyiv.
Moscow has stepped up its aerial bombardment of Ukraine in recent weeks and continues to reject Volodymyr Zelenskyy’s calls for a 30-day ceasefire.
“Now we have a strategic advantage. Why should we lose it? We are not going to lose it. We are going further. We’re advancing and we’ll continue to advance,” Mr Peskov said.
Russia has previously said it would only commit to a ceasefire if Kyiv stops receiving foreign military support, fearing that a pause in the fighting would offer Ukraine a chance to rearm and regroup its forces.
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Asked if Moscow could commit to not using a ceasefire in the same way, Mr Peskov said: “A ceasefire is a ceasefire, and you stop.
“But America is not saying that ‘we’ll quit any supplies’. Britain is not saying that as well. France is not saying that as well. This is the problem.”
