[@mdk] I guess it depends how far back you want to trace the problem. Creating a huge power vacuum in Iraq and creating a cockpit for Saudi v Iran? Toppling Saddam, Supporting the Saudis, deposing the Shaw, backing the Mujahadeen against the Soviets, The Soviets going into Afganistan Deposing the Shaw, British Imperial policy, Allied Intervention in the Russian Civil War and on and on.

I don't want to characterize all these as mistakes made by Americans, or Brits or whomever but the chains of historical incidence are always long.