A new territorial dispute flare-up along the shared Sarstoon River border has prompted Belize to take formal diplomatic action against Guatemala, marking a fresh escalation of a decades-long sovereignty conflict between the two Central American neighbors. The incident, which unfolded on September 10, saw more than a dozen Guatemalan vessels – a mix of military gunboats and civilian craft – operating in the waters immediately surrounding Sarstoon Island, a territory Belize claims as its sovereign territory.
In response to what Belize’s Ministry of Foreign Affairs calls an unauthorized and concerning increase in Guatemalan activity in its territorial waters, the government summoned Guatemala’s ambassador to Belize on September 17 to deliver a formal, strongly worded protest note. Oscar Arnold, Chief Executive Officer of Belize’s Ministry of Foreign Affairs, told reporters that the coordinated deployment of civilian vessels alongside military units is a particularly grave concern for the Belizean government.
Beyond direct bilateral diplomatic channels, Belize has moved to alert and brief a broad range of international stakeholders about the incident to ensure the confrontation is formally documented and addressed at a multilateral level. The Organization of American States (OAS), the Caribbean Community (CARICOM), the Commonwealth, and Belize’s broader network of international diplomatic partners have all been notified of the incursion. Coinciding with Belize’s annual Diplomatic Week, which brings all ambassadors accredited to the country – including those based in neighboring jurisdictions – to Belize City, government officials will brief the entire diplomatic corps on the incident and outline Belize’s official position.
Despite the escalation and formal protest, both Belizean and Guatemalan officials have reaffirmed their shared commitment to resolving the long-running territorial dispute through peaceful diplomatic means. Arnold told reporters that following delivery of the protest note, Guatemalan officials confirmed their longstanding position has not changed: Guatemala also remains committed to finding a peaceful negotiated resolution to the sovereignty dispute. The protest note, which outlines specific Belizean objections to the September 10 incursion, has been delivered to Guatemalan foreign ministry authorities both through the Guatemalan embassy in Belize and Belize’s own embassy in Guatemala City.
The Sarstoon River has been the site of repeated diplomatic tensions between Belize and Guatemala for decades, with Guatemala claiming a large portion of western Belizean territory, including the river’s southern bank and adjacent territorial waters. The confrontation is the latest in a series of encounters that have tested bilateral relations, though both sides have repeatedly avoided military confrontation and prioritized diplomatic negotiation.