Taliban commanders and Islamic State supporters say Trump's campaign trail rhetoric against Muslims - at one point calling for a total shutdown of Muslims entering the United States - will play perfectly in their recruitment efforts, especially for disaffected youth in the West.
"This guy is a complete maniac. His utter hate towards Muslims will make our job much easier because we can recruit thousands," Abu Omar Khorasani, a top IS commander in Afghanistan, told Reuters.
Trump has talked tough against militant groups on the campaign trail, promising to defeat "radical Islamic terrorism just as we won the Cold War."
The president-elect later toned down his call for a total ban on Muslim entry to say he would temporarily suspend immigration from countries that have "a history of exporting terrorism."
Read alsoNYT: Trump picks Priebus as chief of staff and Bannon as strategistBut he has offered few details on his plans to combat various radical groups, including IS, the Taliban and al Qaeda, which represent a wide spectrum of political views.
"He does not differentiate between extremist and moderate Islamist trends and, at the same time, he overlooks (the fact) that his extremism will generate extremism in return," Iraq's powerful Shi'ite Muslim cleric Moqtada al-Sadr said in a statement.
"Our leaders were closely following the U.S. election but it was unexpected that the Americans will dig their own graves and they did so," said IS's Khorasani, who described President Barack Obama as a moderate infidel with at least a little brain in comparison to Trump.
