Where Senate nominees Rob Portman, Ted Strickland differ on foreign-policy issues

WASHINGTON — The winner of the race between Republican Sen. Rob Portman and Democratic challenger Ted Strickland will encounter a number of daunting challenges throughout the world next year, including Islamic State terrorists and Russian ambitions in Ukraine. Even though domestic issues such as the sluggish economy, prescription-drug addiction and relatively modest wage growth dominate the debate, the United States continues to grope through a turbulent world seemingly more fraught with d