Two more were killed and two injured in an airfield. Senator tom coburn said he wont serve out his term. The 66yearold republican from oklahoma will leave after the current session nearly two years before his term is scheduled to end. Coburn was diagnosed with cancer but said the decision was not about his health. Those are the headlines. America tonight is this is al jazeera hello and welcome to the news hour, im in doha, our top stories. Translator we agreed that all efforts must be made to ensure this conference is a success. Reporter the syria regime makes an offer to the rebels, a cease fire for aleppo and a prisoner squat. They demand that thailands