Why are the Americans indicting Cuba's former dictator Raúl Castro?

U.S. authorities have indicted Raúl Castro over the 1996 shootdown of two civilian planes that killed several people. Although the attacks happened about 30 years ago, the charges reflect unresolved accountability for the deaths, renewed attention from victims’ families and investigators, and current U.S. political aims to increase pressure on Cuba - aligning with tougher rhetoric from the Trump administration.