President Bashar Assad said his government will allow international experts access to its chemical weapons sites, but cautioned in an interview broadcast Monday that rebels might block them from reaching some of the locations. According to the accord that was brokered last week in Geneva, inspectors are to be on the ground in Syria by November and all components of the chemical weapons program are to be removed from the country or destroyed by the middle of next year. The revelations of Syria's chemical weapons arsenal became public after an Aug.