"We have seen very alarming actions recently with an unlawful attack against Syria", Mr Lavrov said, referring to the Tomahawk missiles Mr Trump launched at a Syrian air base to punish Assad for using chemical weapons.
If Russia or Syria were to use their military assets to fend off any future USA strike, it may put Moscow and Washington on the brink of a head-on confrontation, and the Kremlin's decision to cut the crucial communications link between the militaries could make matters worse.
Days after that attack, Trump ordered a cruise missile strike that targeted a Syrian air base - a strike that Russian Federation says violated global law. The meeting came as Russia and the US have traded accusations over their involvement in Syria, Russia's ally that was recently hit by an American missile strike.
But amid the recent mutual recriminations over Syria, Tillerson demanded that Russian Federation end its support of the Syrian regime following the April 4 chemical weapons attack in the town of Khan Shaykhun.
US Defense Secretary James Mattis has said that while defeating ISIS was first priority, further use of chemical weapons by the Assad regime would not be tolerated and could warrant additional military action.
The meeting comes "at an important moment in the relationship so that we can further clarify areas of common objectives, areas of common interest, even when our tactical approaches may be different", Tillerson said in response.
Russian Federation is also denying any involvement in USA election hacking. "They were there. So we'll find out", he said. Britain's U.N. Ambassador Matthew Rycroft told the Security Council that samples taken from the site of the gas attack, in a rebel-held area of northern Syria, have tested positive for the nerve gas sarin.
For months, the corporate media and political drumbeats have been thumping the same old chestnuts: Donald Trump is Putin's puppet, Hillary Clinton's epic defeat is somehow not valid, and any journalist who asked for incontrovertible evidence of Russian collusion is a Kremlin agent.
Russian President Vladimir Putin said ties with the United States have deteriorated under the administration of Donald Trump as their top diplomats locked horns Wednesday over the Syrian conflict.
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No Supreme Court nominee has ever been blocked through a partisan filibuster, but Senate Minority Leader Charles E. Democratic Senators Heidi Heitkamp and Joe Manchin have already indicated their intention to support Gorsuch.
"Frankly Putin is backing a person that is truly an evil person".
"I said, 'We've just launched 59 missiles heading to Iraq, ' " Trump said, before Bartiromo corrected him to say the attack was on Syria.
On the even of the Tillerson-Lavrov meeting, the White House compared Mr Assad's tactics to those of World War II Nazi dictator Adolf Hitler, sparking widespread criticism for apparently ignoring the Holocaust. "I think it's very bad for mankind".
President Trump said that the images of the attack's aftermath moved him to act, launching the Tomahawk strike on the airbase from where the United States believes the planes took off to carry out the attack.
"I would like to think that they didn't know, but certainly they could have".
Of Assad, Trump added: "This is an animal".
Reporters asked whether Tillerson had introduced evidence at Wednesday's meetings of Russian interference in the US election; Lavrov said Russia had seen no proof for the "slanderous" accusation.
Russia, meanwhile, intervened in the civil war on Assad's side in 2015 and has troops on the ground, which it says are advising government forces. It will be Moscow's eighth veto in support of the Assad government since the Syrian war began six years ago.
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