World News Roundup: 04/04 by CBS Radio News published on 2013/04/26 05:08:38 +0000 The U.S. Keeps a close eye as tensions mount on the Korean peninsula. Tough new gun law passed in Connecticut. The high cost of treating dementia. Jay Leno out and Jimmy Fallon in on "Tonight!" CBS News Correspondent Steve Kathan has today's World News Roundup.