US President Barack Obama reiterated his call for the world to stand up to violent extremism Thursday, saying ’jihadists’ peddle a the lie that there is a clash of civilizations.

US President Barack Obama reiterated his call for the world to stand up to violent extremism Thursday, saying 'jihadists' peddle a the lie that there is a clash of civilizations.

"The notion that the West is at war with Islam is an ugly lie," he told a three-day conference on combating extremism. "And all of us, regardless of our faith, have a responsibility to reject it."