The US Department of Defence's internal watchdog is evaluating lethal strikes by US Southern Command against suspected drug-smuggling vessels, following bipartisan criticism of their legality. The probe focuses on 'Operation Southern Spear,' which has destroyed 59 vessels and resulted in 193 deaths since its launch in late 2025. Lawmakers question the military's authority to use lethal force in international waters. Despite pushback, the Southern Command continues its operations against narco-terrorist networks, with no evidence provided that targeted vessels were carrying drugs.