United States President Donald Trump commented on Friday that his Russian counterpart, Vladimir Putin, and his Ukrainian counterpart, Volodymyr Zelensky, are both "stubborn." "I have known [Putin] very well. I have gone through a lot of things with him ... [But] I have gotten to see things that I was very surprised at: rockets being shot into cities like Kiev, during a negotiation that I felt was maybe very close to ending. We were gonna solve a problem, and then, all of a sudden, rockets got shot into a couple of cities," the US head of state said during a...