When I was a young journalist decades ago, training to cover Washington, one of my mentors offered sage advice: When it comes to U.S. intelligence and diplomacy, things often aren’t what they first seem. Those words echo in my brain today, as much as they did that first day. And following the news recently, I realize they are just as relevant today with hysteria regarding presidential lawyer Rudy Giuliani’s contacts with Ukraine’s government. The coverage suggests Giuliani reached out to new Ukrainian President Volodymyr Zelensky’s team this summer solely because he wanted to get dirt on possible Trump 2020 challenger...