The copyright date at the end is MCMXLIII. This translates as 1943! It should have been MCMLXIV for 1964.
Ambassador Thomas, in this episode, is played by David White, who just a few months later became a regular on "Bewitched", playing Darrin's boss, Larry Tate.
Exactly 3 months after this aired, Bewitched---the first sitcom to use the My Favorite Martian fantasy model and topic---would premiere. One of their recurring "gags" was that Larry Tate would repeatedly fire Darrin Stephens, then rehire him by the end of the show. It so happens that David White---who would go on to play Darrin's boss, Larry, on Bewitched---appears here as a man who is the catalyst for journalist Tim's boss to (threaten to) fire him.