"The conservative view ... is that the better way to ensure order and stability is not through international institutions, which are flimsy and generally powerless, but through the spread of democracy. Because, in the end, democracies are inherently more inclined to live in peace."

That one was also tried by Obama.  The idealism of the "Arab Spring" touted by Obama and Clinton  has resulted not in democracy but in un-democratic chaos in Libya, Egypt, Tunisia and ISIS-occupied Syria and Iraq.  

The United States' belief that people around the world, and particularly in the Middle East, yearn for our version of Democracy and if we will just sacrifice enough of our soldiers to get it for them, all will be well, needs to be re-examined.  The actual fact is that the people in power or who want power in the Middle East are basically operating at the Tribal level of government.   

 "My Brother and I against My Cousin; My Cousin and I against the Stranger." Ancient Arab Proverb.