It came to Helsinki to ask Donald Trump and Vladimir Putin questions about the threat of nuclear weapons and to distribute an open letter about the need for secure elections and true national security. Instead, I was dragged out of their press conference before it even began and into a Finnish jail. No charges were pressed against me. Here’s what I would have asked, had I been given the chance. Your governments pledged in the Nuclear Non-Proliferation Treaty to conduct good faith efforts to eliminate nuclear weapons. But 50 years later, Russia and the United States are nowhere near...