The almost 20 months of war has torn Gaza apart, often displacing residents multiple times and killing more than 54,000 people, according to the Hamas-run Health Ministry. A U.S.-brokered ceasefire agreed in January collapsed in March as Israel enforced a blockade on all humanitarian aid into the strip.

The Freedom Flotilla Coalition (FFC) continues its mission to break Israel’s siege on Gaza, despite Israeli threats to intercept its vessel, the Madleen. The UN has called for the protection of the ship,

Thunberg and 11 other activists are on board a ship headed to Gaza with aid supplies, but the IDF has said it does not intend to allow the ship to dock.