Washington PostWhite House says Syria's Assad preparing another chemical attack, warns of 'heavy' penaltyWashington PostThe White House issued an ominous warning to Syrian President Bashar al-Assad on Monday night, pledging that his regime would pay a "heavy price" if it carried out another chemical attack this year. In a statement, White House Press Secretary Sean ...White House Warns Syria Against Alleged Chemical Attack 'Preparations'NBCNews.comWhite House accuses Syria of preparing another chemical attack, issues ominous warning to AssadBusiness InsiderUS says it appears Syria planning another chemical weapons attackReutersThe Hill -Fox News -Daily Beast -BuzzFeed Newsall 33 news articles »