Former Massachusetts Gov. Mitt Romney, the front-runner for the Republican presidential nomination, announced Thursday a list of 22 foreign policy advisers, 15 of whom served in the George W. Bush administration.

Former CIA Director Michael V. Hayden and former Homeland Security Secretary Michael Chertoff top the list, which includes author Robert Kagan and former Republican Sens. Jim Talent and Norm Coleman.

Mr. Romney also announced 13 working groups on key issues and regions that included another 19 names, many of them professors and think-tank researchers...