On his first trip to Russian Federation as USA secretary of state, Pompeo is expected to discuss with Putin and Lavrov the "aggressive and destabilising actions" Moscow has taken around the world, a senior state department official said last week.
A senior State Department official wouldn't say if the long-awaited release of that report is why Pompeo is now ready to head to Moscow.
Lavrov urged the Europeans on Monday to uphold the Iranian nuclear deal.
"We are very anxious about the risk of a conflict happening by accident with an escalation that is unintended", said Hunt, adding it was important not to push Tehran back towards re-nuclearization.
In advance of the talks, State Department spokesman Morgan Ortagus said Pompeo would "continue to coordinate closely with our allies and partners and ensure the security of our mutual interests in the Middle East and around the world".
Shortly following Pompeo's meetings, US President Donald Trump warned that "it would be a very bad mistake" if Iran does anything.
Pompeo's meetings with Russian Foreign Minister Sergei Lavrov in Sochi will be held as scheduled, said Deputy Foreign Minister Sergei Riabkov.
It simply said talks would be held with officials from France, the United Kingdom and Germany - the three European signatories to the 2015 Iran nuclear deal. Trump has also beefed up the USA military presence in the Gulf to pressure Iran.
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Hook said Pompeo also discussed reported attacks on several oil tankers off the coast of the United Arab Emirates.
The US pulled out of the accord saying the agreement does nothing to stop Iran from developing missiles or destabilising the Middle East. "We share the same threat assessment".
EU foreign policy chief said the European Union supports the worldwide nuclear deal with Iran and wants rival powers to avoid any further escalation over the issue.
Maas also stressed that in Europe's view, the pact was the best way to prevent Iran building an atomic bomb.
The decision to reduce commitments to the JCPOA comes as Washington is ramping up pressure against Iran, by re-imposing new sanctions, including restrictions on Iran's low-level uranium enrichment and metal industry, and ending the sanctions waivers for Iran's major oil clients in an attempt to drive the country's oil exports to zero.
Nonetheless the opposite issues will be hard, on condition that Russian interference in Ukraine and Syria has induced and perpetuated those wars, respectively, and that Russian violations of fingers adjust pacts own the Intermediate-Differ Nuclear Forces Treaty bear in mind pushed the U.S.to withdraw from the INF Treaty and presumably others, primarily based mostly on US officials.