Well De Oppresso Libre is certainly more catching that "Selectively free the oppressed in line state department policy and ensuring that we end up with a foreign leader who is well disposed towards to the US, regardless of his/her human rights record."
PCE sounds good, but it must be done in line with overall interest of the US Govt, and that may well mean allowing people to be oppressed, if you want to do business with the leadership that has their hands on the power.
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