How can one *force* a front end session to *terminate itself* programmatically?

Question

NB: None of the responses to Programmatically quitting the FrontEnd or running without one? answers the question asked here.

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If one runs FrontEndTokenExecute["FrontEndQuit"], Mathematica pops up a dialog about a "running evaluation", etc. This behavior pauses the program's execution indefinitely, which rules out this approach for terminating the front end programmatically.

Is there a way around this?

Acceptable strategies include:

1. suppressing the dialog altogether;
2. clicking on its OK button programmatically (though I suspect this may be impossible to do from within the front end session itself);
3. using some way other than FrontEndTokenExecute["FrontEndQuit"] to programmatically terminate the front end.

Answer 1

One way to avoid "running evaluation" dialog is to schedule the shutdown using RunScheduledTask:

RunScheduledTask[FrontEndTokenExecute["FrontEndQuit"], 1];

Note that you still have to save all notebooks first, otherwise you will get a "save" dialog.