"The threat of terrorism is great and with today's porous borders, someone could bring a biological weapon into our country or sneak a dirty bomb across unmanned portions of our borders."

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Iraq both poses a continuing threat to the national security of the United States and international peace and security in the Persian Gulf region and remains in material and unacceptable breach of its international obligations by, among other things, continuing to possess and develop a significant chemical and biological weapons capability, actively seeking a nuclear weapons capability, and supporting and harboring terrorist organizations.

— Hillary Clinton