Below’s the count (actually an under count) of the estimated death toll of the War on Terror as of 2018. It’s worth glancing at (and noting there’s a lot of the relevant cost of war that isn’t included).
It’s worth noting that the 500,000 not mentioned dead in Syria added to the above 500,000 or so adds up to a million dead people. The count’s still rising and there’s a couple countries that basically got bulldozed. So there’s refugees, wounded, mentally ill, and more than that going on.