Any hope in Russia that the Trump administration would herald less confrontational relations has been dashed in the past week after the new U.S. leader fired missiles at Syria to punish Moscow's ally for its suspected use of poison gas.

Tillerson started a meeting with Putin in the Kremlin after talking to his Russian opposite number Sergei Lavrov for around three hours. The Kremlin had previously declined to confirm Putin would meet Tillerson, reflecting tensions over the U.S. strike on Syria.

Just as Tillerson sat down for talks with Lavrov earlier on Wednesday, a senior Russian official assailed the "primitiveness and loutishness" of U.S. rhetoric, part of a volley of statements that appeared timed to maximize the awkwardness during the first visit by a member of Trump's cabinet.

"One could say that the level of trust on a working level, especially on the military level, has not improved but has rather deteriorated," Putin said in an interview broadcast on Russian television.

In his interview, Putin doubled down on Russia's support for Syrian President Bashar al-Assad, repeating denials that Assad's government was to blame for the gas attack last week and adding a new theory that the attack may have been faked by Assad's enemies.

Tillerson's official itinerary in Moscow started with the meeting with Lavrov, in an ornate hall in a foreign ministry-owned residence. In opening remarks in front of reporters, Lavrov greeted Tillerson with unusually icy remarks, denouncing the missile strike on Syria as illegal and accusing Washington of behaving unpredictably.

"I won’t hide the fact that we have a lot of questions, taking into account the extremely ambiguous and sometimes contradictory ideas which have been expressed in Washington across the whole spectrum of bilateral and multilateral affairs," Lavrov said.

"And of course, that’s not to mention that apart from the statements, we observed very recently the extremely worrying actions, when an illegal attack against Syria was undertaken."

Lavrov also noted that many key State Department posts remain vacant since the new administration took office -- a point of sensitivity in Washington.

One of Lavrov's deputies was even more undiplomatic.

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