World leaders look to calm the Brexit jitters

British Prime Minister David Cameron tried Monday to assure the world that Brexit isn’t the calamity it’s being made out to be. Despite Germany’s warning against long-term uncertainty, he said the UK is taking a go-slow approach to the divorce. U.S. Secretary of State John Kerry also got into the act, saying it is important that “nobody loses their head.” Hari Sreenivasan reports from London.