No nation can go head to head with the USA in military combat. The American resources are too overwhelming. But the world has seen how vulnerable the USA is with 9/11. So the only way you can hurt the USA is by using people already inside the country. Recruit them, train them and give them an order. Guerilla warfare is how they are gonna do it.

Right now the USA is at it's most vulnerable. Way too many soldiers in Iraq and Afghanistan. By the time they return the USA would be demolished. It's not if radical groups are gonna strike again. It's when they are gonna strike again. Your cowboy president with his "we will smoke them out" attitude has made the USA a sitting duck and one of the most hated countries in the world. Your saving grace is the USD. You must hope and pray the USD and economy stays strong otherwise ther USA will loose all it's allies. Cause we all love the USD. But we don't care what happens to America