It's gotten very little attention but a central campaign promise of Trump this year is the idea to "PREVENT WORLD WAR III" by building an "American Iron Dome." We report on what that means. Everyone says it is, basically, completely ridiculous www.motherjones.com/politics/202...

Trump wants an "American Iron Dome." Experts say that's ridiculous.

A central campaign promise, the building of an over two trillion dollar missile shield would be costly, ineffective, and unnecessary.