On GPS Sunday, the U.S. ambassador to the UN, Samantha Power, talks to Fareed from Ukraine - as that country's leader says that his military must be ready for a "full-scale invasion" from Russia. Also, the White House announced plans to beef up operations in Iraq to fight ISIS. Will it work? A great panel weighs in. Then, countries around the world are worried about their declining populations - and they've rolled out some audacious plans to promote procreation.