Declining to give further information, officials said Syria may be developing a new delivery method that would make it harder to trace the origin of the attacks.
Mr Assad is believed to have secretly kept part of Syria's chemical weapons stockpile, despite a US-Russian deal under which Syria was supposed to have handed over all such weapons for destruction in 2014.
A second official said, however, that the Trump Administration hopes that stepped-up global sanctions and diplomatic pressure will help rein in Assad's chemical weapons programme.
Last April, the USA military fired a barrage of missiles into Syria's Shayrat Airfield in retaliation for a chemical weapons attack that killed about 100 civilians.
TRUMP administration officials claim the Syrian Government may be creating new kinds of chemical weapons, despite a 2013 agreement to destroy such a program.
Tillerson said at a conference last week in Paris that Moscow "ultimately bears responsibility for the victims" of chemical weapons attacks in Syria since it became militarily involved in 2015.
Another official added that there were hopes an increased diplomatic pressure with global sanctions will rein in the Syrian regime's chemical weapons programme.
The United States is concerned that sarin gas was recently used in Syria, US Defence Secretary Jim Mattis said today.
Senior US officials reported that the Syrian regime might be developing new types of chemical weapons, and that if necessary, President Donald Trump will take military action.
Rebel forces have been fighting Assad in a gruesome civil war for years. The Islamic State (Isis) group has been accused of using mustard and chlorine gas in the civil war by delivering those using shells or improvised explosive devices. Nearly all independent analysts and investigators agree the Syrian regime is the culprit of the chemical attacks.
Assad's forces have instead "evolved" their chemical weapons and made continued occasional use of them in smaller amounts since a deadly attack last April that drew a U.S. missile strike on a Syrian air base, the officials told reporters in a briefing.
"All of the countries condemned [chemical] gas use", Laith said, "but the regime continues to bomb us".
Home to roughly 400,000 residents, Eastern Ghouta, a suburb of Damascus, has remained under a crippling regime siege for the last five years.
It has been more than a month since the developers acknowledged the calls for a New Game Plus mode to be added. To be honest, Ubisoft is working hard on the new title of the Assassin's Creed franchise, that's for sure.
The Feb. 8 trade deadline is looming, so the Wizards could feel enticed to trade for one or two players. So just how bad is this for the Wizards? The Wizards ARE NOT better off without Wall in the lineup.
The feature is available only to the US users right now, but I am expecting a broader roll-out in the coming months. However, at that point, the feature was only available for Alexa's ecosystem, and not other devices outside of it.
Detroit Pistons center Andre Drummond has been added to the NBA All-Star Game , replacing injured Washington guard John Wall . Wall was initially named as a reserve for Team LeBron but will be out six to eight weeks due to a knee injury.
A helicopter carrying four people crashed into a Southern California home Tuesday, killing three, emergency officials said . It was unclear, based on her account, whether the pilot got out on his or her own, or was helped out by the bystanders.
A testimony to the competition between them in Test cricket was the recently concluded three-match series which was keenly fought. South Africa are without AB de Villiers for the first three One-Day Internationals against India due to a finger injury.
Stonewall Jackson , Mueller's chosen pseudonym, is the name of a Confederate general who served during the American Civil War. The case goes back to 2013, when Swift accused Mueller of inappropriately touching her at a meet-and-greet in 2013.
Monday night was a step in the right direction, though, as Tatum scored 20 points for the first time since Christmas Day. Going into halftime, the Celtics led 56-45 behind strong transitional defense and consistent scoring.
Allie also met acclaimed rapper and producer Pharrell Williams on the set of the show , which she said was "pretty cool". Allie told The Ray D'Arcy Show on RTÉ Radio 1the popular host helped her get past her nerves before her appearance.
The "inauguration" was meant as a protest against President Uhuru Kenyatta's new term after months of deadly election turmoil. Authorities appear to have opted for a media blackout of the event rather than deploy police to stop or disperse the meeting.
The Switch, released in March 2017, flew off shelves at home and overseas through the critical year-end shopping season. That already exceeds sales of 13.56 million consoles for the Wii U that was on the market from late 2012 through 2017.
Love likely out 6-8 weeks
This team can beat anybody in the East and the game against the Cavs has likely been circled on their calendar for some time . With nine field goals, James (10,924) passed Dirk Nowitzki (10,917) and moved into eighth place on the NBA's all-time list.
Douglas Haig A 'Person Of Interest' In Las Vegas Shooting
The coroner and county attorneys didn't immediately say whether they would appeal Williams' ruling to the Nevada Supreme Court. She was initially considered a person of interest but authorities later said she is not likely to face criminal charges.
LG G6 and LG Q6 Get New Color Variants
LG just announced that the phones will be coming in new colors like "Moroccan Blue", "Lavender Violet" and " Raspberry Rose ". The smartphone is powered by Snapdragon 435 processor teamed u with 3GB RAM and 32GB of expandable internal storage space.