Any analysis of Donald Trumps current thinking on Russia risks getting out of date very quickly.
Read too much into an individual tweet, post or off-the-cuff comment by the US president, and the danger is that your conclusions will be contradicted by tomorrows tweet, post or off-the-cuff comment.
Believe me. Ive been there.
As todays edition of the Komsomolskaya Pravda newspaper put it: "The US president blows hot and cold…he changes his mind on key issues as easily as he changes shoes."
Recently, though, when it comes to Russia, the White House does appear to have been blowing more cold than hot, which explains the headline in todays edition of Moskovsky Komsomolets: "The Russian-American Chill."
Following Vladimir Putin and Donald Trumps most recent telephone conversation on 3 July – their sixth this year – President Trump revealed that the two leaders "didnt make any progress" towards ending the war in Ukraine.
"Im not happy about that," he added.
Four days later, President Trump threatened to impose a 10 percent tariff on any country aligned with the BRICS, the group of nations that includes Russia.
On Tuesday, his frustration boiled over with some of his strongest language so far: "We get a lot of bullshit thrown at us by Putin, if you want to know the truth," President Trump said at a cabinet meeting.
"Hes very nice all the time, but it turns out to be meaningless."
Today I asked for the Kremlins reaction.
"We are pretty calm about this," Vladimir Putins spokesman Dmitry Peskov told me on a Kremlin conference call for journalists.
"Trumps way of talking is generally quite harsh…we plan to continue our dialogue with Washington to mend our broken bilateral relations…we hope that Trump and his team will continue their efforts to get the peace process back to the realm of diplomacy."
The Kremlin was trying, at least, to sound diplomatic.
The Russian press? It wasnt even trying.
In Komsomolskaya Pravda, a political pundit accused Donald Trump of "an absence of geopolitical achievements".
The tabloid Moskovsky Komsomolets wrote about President Trumps "mercurial temperament, his propensity for sudden moods and chaotic changes of direction".
This weeks edition of Arguments and Facts mocked Donald Trump over Elon Musks new America Party.
"Now every time the US president says Make America Great Again hell be inadvertently promoting Musks party," the paper wrote.
This is a sea-change from the previously positive coverage in Russia of the Trump administration. Back in March, a political scientist told Izvestia that "America now has more in common with Russia than Washington does with Brussels or Kyiv".
In May, the business daily Kommersant declared: "Donald Trumps stance couldnt be more advantageous to Moscow.
"He refused to strengthen sanctions against Russia and confirmed his determination to develop large-scale trade with Russia."
The optimism was understandable. Earlier this year, the White House was publicly criticising President Zelensky (not President Putin) and exerting pressure on Kyiv (not Moscow).
The US and Russia had launched bilateral talks to boost their relations.
Whats more, President Trumps envoy Steve Witkoff was a frequent visitor to Russia for talks with President Putin. At one of their meetings the Kremlin leader gave him a present to take back for Trump: a portrait of the US president.
It seemed as if Moscow and Washington were destined to forge a new relationship.
But its been more than two months since Witkoffs last visit. And, in June, Russia announced that the US had cancelled the next round of talks between the two countries aimed at restoring the operations of diplomatic missions.
Meanwhile, President Trump has, it seems, been growing increasingly frustrated by Russias refusal to agree to a comprehensive ceasefire in Ukraine.
"The Kremlin believes that Trump offers Russia too little and, therefore, the continuation of a good quarrel is better than a bad peace from the point of view of Russias long-term national interests," wrote Moskovsky Komsomolets today.
In other words, on Ukraine, Vladimir Putin wants more than Trump has been prepared to offer.
More in terms of territory, more in terms of concessions from Kyiv on the future size of Ukraines army, more in terms of cutting back Western arms supplies to Kyiv.
And, to borrow a Trumpian expression, Vladimir Putin clearly believes that "he holds the cards" right now and can hold out for a better deal.
Is he right? Or is Moscow miscalculating?
Much will depend on what President Trump does next: on the scale of future US military assistance to Ukraine, and on whether the White House decides to strengthen sanctions against Russia.
But keep in mind my caveat.
And that vivid image, in Komsomolskaya Pravda, of Donald Trump changing his shoes.
Only a week ago Russian commentators were celebrating the US governments decision to freeze some military assistance to Ukraine.
So, follow closely. Not only what Donald Trump says on Russia and Ukraine, but the action he takes.