Each made it clear in no uncertain terms: Washington will no longer turn a blind eye to Syrian atrocities - or Moscow's continuing cover-up of those crimes.
"U.S. and Russian interests, whether in Syria, toward North Atlantic Treaty Organisation, human rights, etc. are far too different despite President Trump's earlier interest in an understanding", White said.
But the civil war in Syria has driven a wedge between Moscow and Washington, upending what many in Russian Federation hoped would be a transformation in relations, which reached a post-Cold War low under Trump's predecessor Barack Obama.
At their meeting, Lavrov told Tillerson Moscow was hoping to understand Washington s "real intentions" and warned that Moscow considered it "fundamentally important" to prevent more "unlawful" USA strikes against its ally Syria.
"Things will work out fine between the United States of America and Russia", Trump tweeted.
The news conference came after Russian President Vladimir Putin met the top American diplomat for nearly two hours to see if they could rescue relations between the world's mightiest military powers. "The world's two primary nuclear powers can not have this kind of relationship". Lavrov said Wednesday that "we're willing to put it back into force" if Washington and Moscow can resolve their differences.
On Wednesday, Russia vetoed a U.N. resolution drafted by the United States, Britain and France demanding that the Syrian military provide unfettered access for UN investigators to details of their operations on the day of the alleged attack. Indeed, Trump said they may be "at an all-time low".
Until the chemical attack, the Trump administration had sought to step back from the USA position that Assad should leave power.
Earlier, Trump boasted in an interview with Fox Business television that the order to launch the missiles was given as he and visiting Chinese President Xi Jinping were digging into chocolate cake at his Florida resort. It's very bad for this world.
At his press conference following the meeting with NATO's secretary general, Trump said "it'd be a fantastic thing" if the two former Cold War foes were able to reconcile but warned that "it may not happen; it may be just the opposite". Tillerson said: "That the recent chemical weapons attack carried out in Syria was planned, it was directed and executed by Syrian regime forces and we're quite confident of that". I think he had a very successful meeting in Russian Federation. "That's a butcher", Donald Trump said.
A senior administration official pointed the finger of blame at Russian Federation for an alleged coup attempt during October's election.
On whether Russian Federation had prior knowledge about Syrian government's alleged use of chemical weapons, Donald Trump said it is "possible" but "unlikely" that Russian Federation had known in advance of Syria's plan to launch a chemical weapons attack on its own citizens.
However, Kremlin spokesman Dmitry Peskov has said, "That is not true", when CNN asked about USA allegations that Russian Federation may be complicit.
But in an apparent reversal, Mr Trump said the alliance is a "bulwark of worldwide peace and security".
The chill in Moscow today was a far cry from the atmosphere a year ago. That all changed with last week's gas attack and President Trump's quick response.
"But when you drop gas, or bombs, or barrel bombs - they have these massive barrels with dynamite and they drop them right in the middle of a group of people".
Mrs May also defended Boris Johnson after he failed to persuade other G7 states to tighten sanctions on Russian Federation.
Still, the turnabout drew praise from some lawmakers who had been concerned with Trump's previous stance.
She said that in light of that deal, the Idlib attack was "very embarrasing" for the Russians. He mocked NATO's military incursion in Kosovo in 1999. "This was the right decision".style="text-align: center;"