Now i really no basies to prove that this exist, but I have been hearing alot about this new type of bomb. Here is what i have heard about it.
Stronger then the H bomb, but without fallout.
Uses the same principles of the Nuetron Star, which i looked that up and it said that if you was to drop a marshmellow on a Nuetron star the force would equal and atomic bomb.
could take out a 20 mile blast radius (that is 4 times the blast radius of the strongest H bomb)
and america is less than 2 years form testing the first one.
like i said i really have no proof that this exist. This is just what i have heard about on other forums and sites.