Analysis: Russian nerves grow over Trump's itchy trigger finger
By Ivor Bennett, Moscow correspondent
Russia is getting nervous about Donald Trump鈥檚 trigger finger, and it shows.
The comments from Deputy foreign minister Sergei Ryabkov - warning the US against joining Israel鈥檚 military campaign - betray Moscow's growing unease that it could be about to lose its closest Middle Eastern ally.
Russia has strong ties with Iran, which have deepened since the Kremlin鈥檚 invasion of Ukraine.
These were formalised in a strategic partnership pact that the two countries signed at the start of the year.
So at first, Russia seemed to view its ally's conflict with Israel as an opportunity to gain leverage.
The Kremlin was quick to offer its services as a potential mediator.
If Vladimir Putin could persuade Tehran to back down and return to nuclear talks with Washington, he'd potentially have a favour to cash in with the White House over its military support for Ukraine.
But the offers to mediate fell on deaf ears.
A 'critical' situation for the Kremlin
And with Donald Trump threatening to assassinate Iran's Supreme Leader, Moscow has switched to crisis mode - fearful of losing its second key regional ally in six months, after the fall of the Assad regime in Syria.
So, as well as Ryabkov, other senior figures have taken to the airwaves.
Russia鈥檚 spy chief Sergei Naryshkin called the situation "critical".
And according to Ministry of Foreign Affairs spokeswoman Maria Zakharova, the world is "millimetres away from catastrophe" due to Israeli strikes on Iran's nuclear facilities.
Russia's peace push 'spectacle'
It's quite the spectacle - a country that's been waging war on its neighbour for more than three years is now urging others to show military restraint.
That's because US involvement poses serious consequences, not just for Iran, but for Russia too.