The WW1 Turkish affair is covered in detail in the book "The Confidence Men" by Margalit Fox, an excellent look at how this kind of trick has worked in real life.
In the pilot of the original episode (and then called back to later) "Hardison dies in Plan M."
Sophie's (Gina Bellman) drug cartel persona offers the choice of "plata o plomo" translated as silver (money) or lead (bullets). This threat was originally used against Sophie in the original Leverage (2008), S5 E14 "The Toy Job."