On 3 January 1833, Britain formally declared its reoccupation of the Falkland Islands to the Argentine government. This was a political follow-up to the military action taken the previous day. The declaration reinforced British sovereignty claims in the region. Argentina contested the action immediately, arguing that the islands were part of its national territory inherited from Spain. The event became a central issue in Argentine diplomatic history. It laid the groundwork for ongoing disputes that resurface in political speeches, textbooks, and official positions. The date is still commemorated by Argentina as a reminder of its claim.