Syria's Assad demands US provide proof of chemical weapon attack Syrian President Bashar al-Assad has warned the United States that its allies may take "direct and indirect" action if the country is targeted by military strikes. Speaking in an interview with CBS News that aired on Monday, Assad said that in addition to direct responses, indirect impacts could include "instability and the spread of terrorism all over the region that will influence the West directly." "We have to expect the worst," he added in the interview. Assad, who said Syria opposes the use of chemical weapons, also said that any strikes would boost the al Qaeda offshoot in his country: "It's going to be direct support." The Syrian President also urged the United States to show evidence that his government was behind last month's deadly chemical weapons attack in Damascus. More than 1,400 people were killed when sarin nerve gas was used on one of the city's suburbs. Assad neither confirmed or denied that his government had chemical weapons but said if it did they would be kept safe in a central stockpile. More about: Bashar al-Assad, Conflict in Syria, Diplomatic tension, Military offensives, Syria, USA