U.S. envoy in anti-ISIS coalition to step down Karen DeYoung, Washington Post Posted: Wednesday, September 23, 2015, 1:07 AM WASHINGTON - Retired Marine Gen. John Allen has told the White House he will resign later this fall as the Obama administration's envoy to the international coalition against the Islamic State, according to U.S. officials. Read more at http://www.philly.com/philly/news/nation_world/20150923_U_S__envoy_in_anti-ISIS_coalition_to_step_down.html#p8sKBwG6zcVZYQKh.99