Yeah, that's exactly the correlation I am pointing out. Guess who started really blowing up ~2 years ago? ISIS.
More instability = less control over oil resources by the sovereign = cheaper oil for everyone else
Decrease the oil price, and you increase demand for oil.
Increase the demand for oil, and you increase the demand for the dollar.
Increase demand for the dollar and you increase its value. Basic economics.
6/7 of the richest companies in the world in terms of revenue are oil companies, and oil is primarily traded in dollars. You'll notice that when a country starts trying to sell oil in something other than the dollar, they go on the NATO shit list: i.e. Iraq, Iran, Venezuela.
https://en.wikipedia.org/wiki/Petrocurrency#Currencies_used_...
https://en.wikipedia.org/wiki/List_of_largest_companies_by_r...
"War is a matter not so much of arms as of money." -Thucydides