Which classification (CBRNE) poses the biggest threat to the United States and global community today? Why?

1. There are five classifications and types of weapons of      mass destruction (WMDs) to include chemical, biological, radiological,      nuclear, and explosive (CBRNE). Outline one type of weapon of mass      destruction that falls into each classification (i.e., nuclear-atomic      bomb), and explain why this WMD is considered a weapon. Which      classification (CBRNE) poses the biggest threat to the United States and global community today? Why?

Your response must be at least 200 words in length.