As a former artillery officer who was trained to decipher the nuclear launch codes, it doesn't take a missile to delivery a nuclear weapon to a major city. Any given cargo truck is more than enough. The bombs that were dropped on Hiroshima and Nagasaki weren't very big. We had ones that would fire from an 8 inch howitzer that were around 250 - 300 pounds and under 3 ft long. Exactly how hard would it be to smuggle one of those across the border that the DC twits refuse to secure? They have a blast almost equivalent to the one dropped on Nagasaki. With the change in US law concerning the use of Mexican trucking companies to make deliveries anywhere in the US, how hard would it be to simply ship one to New York or DC?