Actually, to physically destroy america from without, nuclear is about the only way.
As I fly over cities, I am amazed at just how many buildings make up the US. The amount of developed real estate is staggering. As I fly over Minneapolis for example, I imagine an area of eight city blocks on fire and, from 10,000 feet, it is just a tiny little dot on a huge developed landscape. Trying to destroy this country with conventional weapons would be akin to trying to kill an elephant by sticking it with a pin once a week. It MIGHT be mildly annoyed.
That said, it would still take a lot of nukes and, after the first one, the rest would need to be carried by missles because there is no way they would make it over the border, mainly because all the muslims in this country would be dead or in "internment camps."
"...it would still take a lot of nukes and, after the first one, the rest would need to be carried by missles because there is no way they would make it over the border, mainly because all the muslims in this country would be dead or in "internment camps."
I wish I could be as certain as you are that the US would even have the will to retaliate for such a strike. I don't. In this last election New York, Pennsylvania, and Washington, D.C. all went for the Democrat ass. And these were places that actually experienced many deaths at the hands of the mad Moslem murderers among us.