Vessels expected to reach Gaza in mid-September in third attempt by sea to end a war that has killed over 63,000 Palestinians.

The Global Sumud Flotilla has left the Spanish port city of Barcelona, with the stated goal of “breaking Israel’s illegal siege of Gaza”.

The boats started moving out of the port at approximately 3:30pm on Sunday, with crowds of activists, support staff, and well-wishers there to see the crews off.

Hours before their departure, Swedish campaigner Greta Thunberg spoke out against Israel’s genocide of Palestinians, as did a number of other high-profile people who were sailing with the Flotilla.

“Israel [is] very clear about their genocidal intent. They want to erase the Palestinian nation. They want to take over the Gaza Strip,” said Thunberg, hitting out at politicians and governments “failing to uphold international law”.