The opening dose of earnest monologue from Princess Grace of Monaco gives us a clue as to what we might be in for here. It's a clunkily stitched together series of cameos built around the process of identifying and stopping those bent on exporting opium from Iran to, ultimately via Europe, the United States. Yul Brynner ("Col. Salem") starts off the process working with the Imperial authorities in Iran where poppy farming is completely outlawed. Needless to say, though, if the money was right then there were those who would bend the rules and here we can look "Salah Khan" (Hugh Griffiths - a…