Mr Assad made the comments in an interview broadcast by AFP, his first since the USA struck a Syrian airbase with missiles in retaliation for the events in Idlib province.
The Syrian Democratic Forces, which include Arab fighters, say they are working to clear Islamic State militants out of the Jalab Valley, north of Raqqa, a city held by the extremists with an estimated population of 300,000.
The attack on the town of Khan Shaykhun killed scores of people, including numerous children. "Were they dead at all?" he asked. "We have never used our chemical arsenal in our history".
The interview with Assad was broadcast as the Syrian government asserted without evidence that US warplanes had bombed what it called a chemical weapons cache possessed by Islamic State group militants in Syria on Wednesday, releasing poisons that it said had killed hundreds. President Trump ordered an airstrike on a Syrian air base the USA believes was the launch point for the attack, which reported involved sarin gas, in retaliation.
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Tebow signed a minor league deal with the Mets back in September and has been at their spring training facility in Port St. Other than the two home runs, he has one other hit and has struck out five times in 13 total at-bats.
Assad rejected the notion that rogue elements of his own military might have carried out the alleged chemical attack without his control, saying that breakaway troops not only lacked the ability to launch aircraft but could not have accessed chemical weapons stockpiles that he previously relinquished.
Denouncing a "very barbaric" attack, Trump ordered a strike that saw 59 Tomahawk cruise missiles slam into the airbase in central Syria from where Washington accused Assad's forces of launching the attack. "We don't have arsenal". Russian Federation is a steadfast backer of the Syrian government amid that country's bloody 6-year civil war.
More than 300,000 people have lost their lives and millions of people have been displaced since a peaceful uprising against Mr Assad six years ago turned into a full-scale civil war. Moscow offered the explanation that regime aircraft hit a chemical weapons facility controlled by rebels on the ground. "I like to think they didn't know. They were there", he said Wednesday.
Meanwhile, Russian President Vladimir Putin said the "level of trust" had "not improved but has rather deteriorated" between the two countries. "The world's two foremost nuclear powers can not have this kind of relationship", Tillerson told a Moscow news conference.
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He said over the next few months "rising inflationary pressures will increase the gradient on the economic growth treadmill". United Kingdom living standards are under more pressure than at any time in 2 1/2 years and the squeeze is getting tighter.
He also warns that he would only allow an "impartial" external investigation of last week's suspected chemical attack in Idlib province that killed over 80 people, including dozens of children. China opted to abstain, a move Trump praised.
"Russia's initiative in 2013 to dismantle Syria's chemical weapons has been exposed as a shambles".
In a show of continued support for the regime, Moscow will host Syrian Foreign Minister Walid Muallem for talks with Lavrov on Thursday.
The report says that "pro-opposition social media reports" began suggesting an attack shortly before 7 a.m. local time on April 4, while Russia's explanation maintained an airstrike occurred around noon local time.
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But she also reiterated her warning that failure to reach a trade deal would hamper security ties. The EU wants to wait until exit terms are finalised before starting trade talks.