President Obama’s choice about Afghanistan isn’t getting any easier. Last week Matthew Hoh, a senior State Department official in the country, resigned to protest U.S. policies there. Hoh said he didn't "see the value or the worth in continued U.S. casualties or expenditures of resources in support of the Afghan government in what is, truly, a 35-year old civil war." This is not the first time a policymaker stepped down over choices made in Washington. Click through this TNR slideshow to see some historical wartime resignations.