The draft resolution, obtained by The Associated Press, was circulated ahead of an emergency Security Council meeting.
Syria's state news agency SANA initially said the attack on the T4 air base was likely "an American aggression", but Pentagon spokesman Christopher Sherwood quickly denied the United States was behind the strike and the agency then dropped the accusation, blaming Israel instead.
"Only a monster does this", Haley said.
The new proposed United Nations resolution includes rival Russian and Western proposals for a new body to assess blame.
"There was no chemical weapons attack", Nebenzia told the Security Council. "I support targeted military action against the Syrian regime, as I have in the past", Perlmutter told Denver7, "but that does not negate the need for President Trump to come before Congress to fully debate a new Authorization for the Use of Military Force to combat the threat in Syria".
"On the eve of potential United States and French strikes against Assad in response to the Douma gas attack, it is likely the Israelis already had the intention to strike at the T-4 base, and timed their attack to maximise the destruction they could inflict on Iranian forces", he told AFP.
The Syrian Observatory for Human Rights, which monitors the country's conflict, said 14 fighters were killed, including Syrian army officers and Iranian forces. The Syrian army, backed by Iran and Russian Federation, has waged a campaign in eastern Ghouta, which has been the scene of some of the fiercest fighting and bombings of the civil war, resulting in hundreds of deaths.
"The chemical weapons attack by the Syrian regime against innocent civilians is horrifying".
Trump and French President Emmanuel Macron have also vowed a "strong, joint response", while Jim Mattis, the U.S. defence secretary, said nothing was off the table in terms of military action. It said the two leaders strongly condemned chemical attacks in Syria.
The Israel military responded by launching an airstrike on the T-4 military airbase 40-miles from the city of Homs. At least 42 people were killed and 500 injured.
President Donald Trump during a meeting with his Cabinet, in the Cabinet Room of the White House on Monday.
Many dead, including women and children, in mindless CHEMICAL attack in Syria.
And the US warned Russian Federation of the attack in advance.
September 14, 2013: Then-U.S. Secretary of State John Kerry and Lavrov reach a deal that calls for the removal or destruction of Syria's chemical weapons by mid-2014. The Syrian regime is accused of using a chlorine agent over the weekend in the town of Douma, just outside Damascus in the battered eastern Ghouta suburbs.
"The statement from the Russian ambassador was as abrasive as has been heard within the Security Council for a long period of time", he said.
"I hope at least that the USA military and those countries participating in the coalition led by the United States understand that", Lavrov told a press conference.
January 5, 2017: Kerry writes in an exit memo that the US worked with Russian Federation and the U.N.to destroy 1,000 tons of Syria's stockpiles but acknowledges that "unfortunately, other undeclared chemical weapons continue to be used ruthlessly on the Syrian people".More news: 3 things to watch for when Mark Zuckerberg testifies to Congress
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