Appearing from Riyadh on Fox News Sunday with Chris Wallace this morning, Secretary Tillerson fielded a slightly offbeat question...
Wallace commented, “you looked pretty good while you were doing it – frankly, more comfortable than the President or Commerce Secretary Ross. Had you been practicing, sir?”
Tillerson responded: “Well, I hadn’t been practicing, Chris, but it was not my first sword dance.”
Wikipedia on the dance:
The term 'ardah' is thought to derive from the Arabic verb ard meaning 'to show' or 'to parade'. It was so named because its purpose was to publicly display the fighting strength of a tribe and boost morale before an armed engagement.
and this article notes that Prince Charles also participated in the ceremony on one of his visits.