Even If He Did ...

 ... it wouldn't change much for Russia. 

WASHINGTON, July 25 (Reuters) - U.S. President Donald Trump is unlikely to follow through on his threat to place 100% tariffs on countries that buy Russian oil because it would worsen politically-damaging inflation pressures and his similar threat against buyers of Venezuelan oil has had limited success, especially in China. Trump said this month he would put 100% secondary tariffs on countries that buy Russian exports unless Moscow agrees to a major peace deal with Ukraine in 50 days, a deadline that would expire in early September.

Reuters gives a summary:

100% tariffs on Russian oil buyers would risk price spikes, global economy meltdown

Trump: current oil price is great, helps tame inflation

Tariff threat seen as political grandstanding by some trade partners

Trump's sanctions on Russia so far not directly over Ukraine war

China adapts to US sanctions, continues Venezuelan oil imports

Trump DOES NOT do anything which is not a political grandstanding, while not understanding that it weakens his (and the US) already weak position even more and makes it untenable. It is as simple as two times two. But we all know why he does it--it is not a statesmanship issue, it is a psychiatric one. 

Now the US "allies" (LOL) from UK got a warning:

The United Kingdom would not hesitate to sabotage a potential thaw in US-Russia relations, a top aide to Russian President Vladimir Putin warned on Friday. Nikolay Patrushev, a longtime national security official and senior Kremlin adviser, accused London of being prepared to stage a so-called ‘false flag’ incident in order to derail efforts by US President Donald Trump to resolve the conflict in Ukraine and normalize ties with Moscow. “If necessary, London would easily stab Washington in the back. I believe officials in the White House realize what kind of ‘ally’ they are dealing with,” Patrushev told RIA Novosti.

As was pointed out not for once--the UK is a military-economic paper tiger and the only thing they can do is terrorism (they call those "operations" in London) through their proxies in 404. They, however, may try to "false flag" the US Navy. I am sure that Mr. Naryshkin had a discussion with Mr. Ratcliffe precisely about this contingency. Europe meanwhile, UK included, better listen to a famous Russian deep undercover spy Andrei Bezrukov: 

He, certainly, doesn't deviate much from my long-standing thesis that Russia and the US move in a different dimension power balance-wise. It is a long discussion but here is one demonstration--what was allowed to film--of the July Storm--operational exercises just to make sure that everything flies as designed.  
Recent exercise of the Pacific Fleet have been held specifically to underscore that Russia is to the North of China and she will get involved if the nutjobs in D.C. prevail and will decide to do stupid thing. So, the turbulence continues, while Pokrovsk and Konstantinovka suddenly (not really, LOL)) lost their "strategic significance", if you know what I mean.