BLITZER: The Pentagon has identified the servicemember killed over the weekend in Afghanistan as Brent Taylor. Taylor had taken a leave of absence from his job as mayor of north Ogden, Utah, to serve in the National Guard. Taylor was killed by an Afghan soldier in an apparent insider attack. He's survived by his wife and seven children. Our deepest, deepest condolences to the family. Iran says it will defy the new U.S. sanctions that went into effect today, calling it psychological warfare. The newest sanctions zero in on Iran's oil and gas, shipping and banking industries. And just moments ago, President Trump was asked about the role of oil in this round of sanctions.</s>DONALD TRUMP, PRESIDENT OF THE UNITED STATES: We have the toughest sanctions ever imposed. But on oil, we want to go a little bit slower, because I don't want to drive the oil prices in the world. This has nothing to do with Iran. I don't want to drive the oil prices in the world up.</s>BLITZER: This move officially erases all the sanctions that were lifted under the Iran nuclear deal during the Obama administration. On the eve of the high-stakes elections across America, celebrities hitting the campaign trail in full force on both sides. You're going to hear who's stumping today in key states. Plus, "Saturday Night Live" under fire right now for a joke involving a wounded veteran. The Republican candidate has just responded. Stay with us.
New U.S. Sanctions on Iran Kick In, Rouhani Vows Response.