Israel intercepts Gaza-bound humanitarian flotilla in international waters near Greece, detains activists

Israel intercepts Gaza-bound humanitarian flotilla in international waters near Greece, detains activists

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Israel intercepted a Gaza-bound aid flotilla in international waters on April 30, 2026, near Greece, and detained 175 activists, triggering a wave of diplomatic reactions and condemnations.

Israeli naval forces stopped vessels from the Global Sumud Flotilla early Thursday as they sailed toward Gaza, aiming to deliver humanitarian aid and challenge Israel’s longstanding naval blockade. The flotilla, consisting of 58 vessels that departed from Spain and Italy at the start of April, was intercepted near the island of Crete, still hundreds of miles from Gaza.

Around 175 activists from multiple countries were detained after Israeli forces boarded and seized at least 22 boats. Israeli authorities said the operation was conducted to prevent a breach of what it described as a lawful naval blockade.

According to Israel’s Foreign Ministry, the majority of those detained were transferred to Greece after coordination with authorities there.


Greek officials confirmed that the activists were taken to Crete, where many were processed for return to their home countries. Some individuals received medical attention for unspecified conditions, while others were transported to Heraklion airport for departure.


Two Activists Taken to Israel

Israeli authorities confirmed that two individuals, a Spanish-Swedish citizen of Palestinian origin Saif Abu Keshek and a Brazilian citizen Thiago Avila, were taken to Israel for further questioning. The Foreign Ministry stated that Abu Keshek was suspected of links to a “terrorist organization,” while Avila was accused of “illegal activity.”

“All the detained activists have disembarked in Crete, apart from two men who are being brought to Israel ‘for questioning’,” the ministry said, reiterating that “Israel will not allow the breach of the lawful naval blockade on Gaza.”


Spain’s foreign minister said one of the detainees had been “illegally” arrested and called for his immediate release, reflecting broader concerns among European governments over the operation.


Conflicting accounts of the Operation

Organizers of the Global Sumud Flotilla strongly contested Israel’s account, alleging that Israeli forces used force during the interception. The group said vessels were boarded, engines were damaged, and communications systems were disrupted.

“Intentionally leaving hundreds of civilians stranded on powerless, broken vessels directly in the path of a massive approaching storm,” the group said, adding that communications had been jammed, preventing coordination and distress signaling.

Israel rejected these claims, stating that the operation was conducted “peacefully and without any casualties.” It also alleged that the flotilla was linked to Hamas and described it as a “provocation” aimed at generating publicity and diverting attention from ongoing disarmament demands.

Boats carrying activists and humanitarian aid for Palestinians in Gaza
Boats carrying activists and humanitarian aid for Palestinians in Gaza reposition in the port during a symbolic send-off as part of the Global Sumud Flotilla in Barcelona, Spain, on April 2, 2026. (Image Credit: AP)

The United States backed Israel’s position, with the State Department describing the flotilla as a “meaningless political stunt” and supporting Israel’s justification for the interception.

International reactions and legal concerns

The incident drew mixed international reactions, highlighting deep divisions over the Gaza conflict and maritime enforcement. Countries including Turkiye and Italy condemned the interception, while a joint statement by Brazil, Pakistan, Spain, Malaysia, and South Africa described it as an “assault” on a humanitarian mission and a “flagrant violation of international humanitarian law.”

Ireland’s foreign minister called for the immediate release of detained citizens and urged Israel to uphold its obligations under international law. Germany and Italy also said they were closely monitoring the situation with concern.

Amnesty International’s Senior Director for Research, Advocacy, Policy and Campaigns, Erika Guevara Rosas, condemned Israel’s “brazen and unlawful interception” of the Global Sumud Flotilla and the “arbitrary detention” of dozens of activists, warning that it “underscores the dangerous consequences of decades of impunity for Israel’s ongoing atrocity crimes against Palestinians, including genocide in the Gaza Strip and apartheid,” alongside its unlawful occupation.

In the United Kingdom, a cross-party group of parliamentarians called for urgent diplomatic action, describing the interception as a potential breach of maritime law. Lawmakers emphasized that the vessels were operating in international waters, raising questions about the legality of the operation under established navigation and civilian protection rules.


Greek authorities, meanwhile, framed their role as humanitarian, stating that they had assumed responsibility for receiving the activists under difficult conditions, with priority given to their safety and return.

The flotilla’s mission was part of a broader effort to challenge Israel’s blockade of Gaza, which has been in place since 2007. Organizers said their goal was to deliver aid and push for the establishment of a permanent humanitarian corridor to the territory.

The Gaza Strip, home to over two million people, continues to face severe humanitarian conditions. International organizations have warned of food insecurity, strained medical systems, and limited access to essential services.

The current crisis is unfolding against the backdrop of the ongoing war in Gaza, which began in October 2023. According to available figures, the conflict has resulted in tens of thousands of deaths and widespread destruction, further intensifying international scrutiny over aid access and civilian protection.

Israel maintains that aid can enter Gaza through controlled channels and that maritime attempts to bypass the blockade risk escalation. Israeli officials said the decision to intercept the flotilla was driven by security concerns and the need to prevent unauthorized entry.


Previous Flotilla Attempts

This is not the first time such an operation has taken place. Israel has previously intercepted similar flotillas attempting to reach Gaza, including an incident last year in which hundreds of activists were detained and later deported.

These recurring confrontations underscore the ongoing tension between humanitarian initiatives seeking to challenge the blockade and Israel’s enforcement of its maritime restrictions.

As activists continue to return home and diplomatic discussions unfold, the incident adds another layer to the already complex and highly contested dynamics surrounding Gaza, humanitarian access, and international law.

Global Sumud Flotilla for Palestine
Global Sumud Flotilla for Palestine. (Image Credit: Doctors with Africa CUAMM)

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