via Home - CBSNews.com — The Trump administration is trying to revive peace talks between Russia and Ukraine. This weekend, White House special envoy Steve Witkoff and President Trump's son-in-law Jared Kushner are traveling to Moscow and Kyiv to meet with Russian President Vladimir Putin and Ukrainian President Volodymyr Zelenskyy. John Herbst, former U.S. ambassador to Ukraine and Uzbekistan, joins with analysis.