Trump’s threat to Iran has a hollow ring. It betrays angst.

Afghan President Asraf Ghani (C) received Iran’s special envoy Mohammad Ebrahim Taherian at the presidential palace, Kabul, April 20, 2020 A tweet by the US President Donald Trump on April 22 said, “I have instructed the United States Navy to shoot down and destroy any and all Iranian gunboats if they harass our ships at …