Ahmadinejad, Kim Jong-il, Putin, Saddam Hussein, Ghadaffi, Daniel Ortega, Noriega?
Ahmadi...: Still in process. Will be dead.
Assad: same same, but different.
Kim: DEAD, still, not exactly an "enemy", the US loves guys like this one.
Putin: US ally of sorts. Isn't?
Saddam: DEAD
Ghadaffi: DEAD by "rebels". Yeah right.
Noriega: was US ally of sorts, is he still alive?
Ortega: I don´t have the slightest idea.
Castro: hehehe, will outlive you all.
Clinton: alive and well.
Bush father: alive and well.
Bush son: alive and well.
Dominic Strauss-Kahn: still in prison? I don´t know. Charged with sex-related crimes.
Wikileaks guy: still in prison? I don´t know. Charged with sex-related crimes.
Argentinean vice-secretary of commerce: found dead supposedly from erotic asphyxiation. Sure dude, sure.
The methods used by CIA, Mossad and MI-6 are not exactly subtle. Read any account by people that worked in these organizations.