The Global Sumud Flotilla, carrying climate activist Greta Thunberg and hundreds of volunteers, set sail from Barcelona on September 1, 2025, after a delay due to stormy weather, aiming to deliver humanitarian aid to Gaza and challenge the Israeli naval blockade. This marks the largest such maritime mission, with participants from 44 countries seeking to alleviate the severe crisis in the besieged territory.
The flotilla initially departed on August 31 but was forced to return to port after encountering strong winds exceeding 30 knots, which posed risks to the smaller vessels in the convoy. After conducting a sea trial and holding a general meeting, the activists decided to wait for safer conditions before setting out again at approximately 7:30 PM local time on September 1.
On board are prominent figures including Swedish activist Greta Thunberg, Brazilian Thiago Avila, former Barcelona mayor Ada Colau, Irish actor Liam Cunningham, and Spanish actor Eduard Fernandez. The mission is organized by coalitions such as the Global Movement to Gaza and Freedom Flotilla Coalition, with volunteers unaffiliated with any government or political party.
This attempt follows previous flotillas that were intercepted by Israeli naval forces in international waters, including one in June where Thunberg was detained and deported. Israeli authorities have consistently opposed such missions, citing security concerns and the need to prevent aid from reaching Hamas, which they classify as a terrorist organization.
The Spanish government has pledged diplomatic and consular protection for its citizens involved, with Foreign Minister Jose Manuel Albares emphasizing support following Madrid’s recognition of Palestine as a state in 2024. This stance reflects broader international concerns over the humanitarian situation in Gaza.
Gaza is experiencing a catastrophic crisis, with the UN-backed Integrated Food Security Phase Classification declaring famine in parts of the enclave in August due to the prolonged conflict and blockade. Over 63,000 Palestinians have been killed, and aid access remains severely restricted, leading to widespread starvation and suffering.
The flotilla is carrying essential supplies like food, water, and medicine, and plans to be joined by additional vessels from ports in Tunisia and Sicily later in the week. Organizers expect the convoy to arrive in Gaza in mid-September, though the success of the mission is uncertain given Israel’s history of interception.
This effort underscores the role of global civil society in protesting the blockade and raising awareness, with activists hoping to pressure for an end to the siege and improve humanitarian conditions through non-violent means.