The head of US diplomacy, Mike Pompeo, has stepped up international pressure on Russia, after the poisoning of political opponent Alexei Navalny.

"When (people) see the efforts to poison a dissident, and they admit that there is a good chance that it is coming from senior Russian officials, I think it is not good for the Russian people." , said the US Secretary of State.

The poisoning of Russian opponent Alexeï Navalny was probably orchestrated by "senior officials" in the Russian government, US foreign minister Mike Pompeo said on Wednesday, further increasing international pressure on Moscow.

"When (people) see the efforts to poison a dissident, and they admit that there is a good chance that it is coming from senior Russian officials, I think it is not good for the Russian people." , said the US Secretary of State.

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Mike Pompeo reaffirmed that Washington and its European allies all want Russia to "hold those responsible to account."

He added that the Americans would try to identify the culprits.

"This is something that we are going to look at, assess, and make sure that we do what we have to do to reduce the likelihood of something like this happening again," he explained. 

"A disinformation campaign"

Last week, Donald Trump, often accused of laxity in the face of Vladimir Putin, explained that he "had not yet seen" evidence of the poisoning of Alexei Navalny, while Germany had already claimed that he had been poisoned by a "Novichok-type" nerve agent.

Russia assures her that no trace of poison has been detected by its doctors in the body of the political opponent and questions the version of the Europeans, seeing it as a "campaign of disinformation" to impose new sanctions on it. .

Tuesday, the G7 countries urged Moscow to bring "urgently" to justice the perpetrators of "confirmed poisoning" of Alexey Navalny, denouncing as "unacceptable" any use of chemical weapons.