'High-profile port seizures consistently disprove a long-held assumption regarding arms trafficking - demonstrating that the world's most destabilizing volumes of illicit weapons move not across land borders, but by sea. The Global Study on Firearms Trafficking 2020 by the United Nations Office on Drugs and Crime (UNODC) found that while interceptions from vessels constitute only 6% of global customs cases, they account for roughly 33% of all firearms seized by customs. Traffickers favour using maritime routes for high-volume bulk consignments over carrying smaller quantities by land.