This "Why?" is a rhetorical question, isn't it?

The U.S. foreign policy is the greatest problem in international affairs to date.
Iran, North Korea and even Syria combined are by comparison harmless.

You could make a representative poll in Europe:

Who shall remain leader of his country till 2020?

A) G.W.Bush.

A) The leaders of Syria, Iran, North Korea, Myanmar, Pakistan, Sudan, Turkey and Lybia.

Bush would lose, with certainty.
That's my perception.

Why? U.S. foreign policy.