the foreign service association comes out with their own set of guidelines for ambassador serving overseas. they would like to get more career diplomats in these jobs, but any candidates should have certain qualifications including leadership and management skills and an understanding of international affairs. particularly the culture of and u.s. interests in the country they are serving. cnn, washington. this is something many dog owners have long believed, but new research finds dogs really are a lot like humans. turns out they know when we're sad. a dog's brain processes human voices in the same way that your brains do. and they can tell by the sound of your voice if you are happy or sad. and something tells me, my colleague don lemon is up next. something tells me your dog boo wants to be renamed boo-boo.