Nuclear terrorist attack would 'change our world' : U.S. President Barack Obama

At the end of a nuclear security summit in Washington, U.S. President Barack Obama makes a push for increased intelligence-sharing to prevent extremist attacks. Rough Cut (no reporter
narration).







 U.S. President Barack Obama says recent statements made by Republican presidential candidate Donald Trump about South Korea and Japan show he doesn't know much "about the world, generally." Rough Cut (no reporter narration). Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including business, financial, national, and international news. For over 160 years, Reuters has maintained its reputation for speed, accuracy, and impact while providing exclusives, incisive commentary and forward-looking analysis.