Three Belgians Arrested as Israeli Navy Intercepts Gaza Aid Flotilla
Israeli naval forces intercepted the Global Sumud Flotilla — a multinational civilian aid convoy attempting to breach the blockade of Gaza — in international waters off Cyprus on Monday, arresting at least three Belgian citizens. The incident has triggered a diplomatic response from Belgium, which is seeking clarification on the detention of its nationals.
The Interception
The flotilla, consisting of 54 vessels carrying approximately 500 activists from 45 countries, was intercepted on 18 May approximately 250 nautical miles (463 km) from the Gaza coast, according to Al Jazeera. The ships had departed from Marmaris, Turkey, on 14 May in what organizers described as the final stage of a journey aimed at challenging Israel’s naval blockade of the Palestinian enclave.
Organizers reported that 39 of the 54 boats were intercepted. Unlike previous operations conducted under cover of darkness, this interception occurred in broad daylight. The Global Sumud Flotilla stated on social media that the Israeli military had “illegally and violently intercepted our international fleet of humanitarian vessels and abducted our volunteers.”
Belgian Citizens Detained
Three Belgian citizens have been confirmed among those arrested: Olimpia Diez Perlines, Pieter Audenaert, and Navid Lari, according to VRT NWS. Approximately ten individuals with links to Belgium were on board the flotilla, including both citizens and residents.
Isja Puissant, a 26-year-old Flemish activist traveling on the ship ‘Akka’, described the interception to Belga news agency: “Three Israeli warships are on their way, including small speedboats. They are going to board the fleet. We spread out as much as possible, but they are faster.” He also reported that the activists had sent a distress signal to Cyprus but received no response, as confirmed by Belga News Agency.
International Reactions
Turkish President Recep Tayyip Erdogan condemned the interception as a “new act of piracy” and called on the international community to act against Israel, VRT NWS reported. The Irish president’s sister, Margaret Connolly, a doctor, was also among those detained, adding a high-profile dimension to the incident. President Catherine Connolly expressed being “very worried” about her sister.
Israel’s Foreign Ministry defended the operation, stating it “will not allow any breach of the lawful naval blockade on Gaza” and described the flotilla as “a provocation for the sake of provocation: another so-called ‘humanitarian aid flotilla’ with no humanitarian aid,” as Euronews reported. The ministry claimed that “the Gaza Strip is flooded with aid,” stating that over 1.58 million tons of humanitarian aid had entered Gaza since October.
Background: The Global Sumud Flotilla
Formed in July 2025, the Global Sumud Flotilla is a coalition of activist groups including the Freedom Flotilla Coalition and the Global Movement to Gaza. “Sumud” — Arabic for “steadfastness” or “resilience” — reflects the movement’s commitment to challenging the blockade through direct civilian action. The flotilla is the largest civilian-led maritime convoy in history, with over 50 vessels and participants from more than 44 countries. Notable participants in previous voyages have included Swedish climate activist Greta Thunberg, who was deported by Israel in October 2025.
Israel’s naval blockade of Gaza was first imposed in 2007 after Hamas took control of the territory, and was formally extended to 150 nautical miles in 2009. Israel argues the blockade is necessary to prevent weapons from reaching Hamas, while human rights organizations including Amnesty International, Oxfam, and UN experts describe it as illegal collective punishment under international humanitarian law.
Analysis: Strained Relations and Legal Questions
The interception in international waters raises significant legal questions under the United Nations Convention on the Law of the Sea (UNCLOS). Bader al-Noaimi, coleader of the flotilla’s legal team, stated that the vessels were within Cyprus’s search and rescue zone and that Cypriot authorities had a legal obligation to respond to distress calls from the flotilla.
For Belgium, this incident marks another low point in bilateral relations with Israel. In September 2025, Belgium recognized Palestinian statehood and imposed sanctions on Israel. Foreign Minister Maxime Prévot has been a vocal critic of Israeli policies in Gaza and previously pushed within the EU for a partial suspension of the EU-Israel Association Agreement. The detention of Belgian citizens is likely to amplify calls for stronger EU action.
What’s Next
The Belgian government continues to seek clarification on the whereabouts and legal status of its detained citizens, with consular officials in Tel Aviv preparing to visit them. The incident is likely to reignite debate within the EU over the bloc’s relationship with Israel, with Belgium potentially pushing for stronger collective action, including the partial suspension of the EU-Israel Association Agreement. Meanwhile, the remaining boats of the flotilla that were not intercepted continue their course toward Gaza, though their fate remains uncertain.