Frida Ghitis: Brittney Griner’s release is first step toward ending state hostage-taking. She says dozens more U.S. citizens are held hostage by adversarial states, and this is just one example. Frida Ghitis: Brittney Griner’s ordeal should be a wake-up call for Americans worried about being targeted abroad. She says the U.S. government needs to work faster and in closer coordination with its allies to ensure their citizens are not targeted.
