"During Tuesday’s Senate hearing on Syria, Secretary of State John Kerry insisted the administration has irrefutable evidence showing the Assad regime was responsible for the deadly chemical attack in late August. But questions remain over key parts of the administration’s case for military action. To explore these issues, we speak with journalist Mark Seibel of McClatchy, co-author of the article, "To Some, U.S. Case For Syrian Gas Attack, Strike Has Too Many Holes." "When it came to questions of the efficacy of a U.N. investigation, or the number of people killed in the conflict, or even the U.S. rendition of what happened in what order, there are contradictions," Seibel says. The United States has claimed it had "collected streams of human, signals and geospatial intelligence" that showed the Assad government preparing for an attack three days before the event. "That claim raises two questions," Seibel writes. "Why didn’t the U.S. warn rebels about the impending attack and save hundreds of lives? And why did the administration keep mum about the suspicious activity when on at least one previous occasion U.S. officials have raised an international fuss when they observed similar actions?"...."