Oooops...

[Lamplighter]

I have never heard of an Ambassador being killed by terrorists,
and the survivors of that attack, not being allowed by the President,
to talk with either the press or Congress, for over a year.

Maybe there are too many specifics in your statement to find an exact match,
but you might look up the current information available on the sequence of events:
... leading to the execution of Zulfikar Ali Bhutto,
... the coup leading to the reign of Muhammad Zia-ul-Haq in Pakistan,
... the the role of the CIA and the death of U.S. Ambassador Arnold Raphel

--- the latter under the presidency of Ronald Regan

[Lamplighter]

Oh, so you think Obama is bad... it could be worse:

The 1979 death of U.S. Ambassador Adolph Dubs is closer to your specifics,
but in a obverse way.
The Ambassador was killed by terrorists during an aborted kidnapping,
... and there was only one survivor of the attack.

That survivor was executed before he could give an accounting.

from here:

"the KGB adviser on scene, Sergei Batrukhin, may have recommended the assault,
as well as the execution of a kidnapper before U.S. experts could interrogate him....

Only one hub cap was lost in the making this post.