Is Islam the biggest foreign threat since the second world war?

Islam is the biggest threat as far as future wars are concerned. Iran will get nukes under Obamas watch, other muslim countrys to follow. Any nation that uses nuclear bombs on America or Isreal will be wiped off the face of the earth. The "mahdi" has to return for Islam to be supreme. The way to bring him back is all out war. I can see Iran being a suicide bomber nation using it's nukes. However having said all of that the current threat to America is illegals. Since 911 over fifty thousands have been murdered by these s.