Hundreds of activists aboard the Gaza Freedom Flotilla were blocked in Turkey on Saturday as they attempted to set sail for the besieged Palestinian territory with 5,500 tons of aid. Organizers say Guinea-Bissau withdrew its flagged ships under pressure from Israel and the United States. The Gaza Freedom Flotilla brings together a “cross-section of humanity” in hundreds of community leaders from all walks of life to raise awareness of Israel’s blockade of Gaza and rally support for its end. “We are determined to stop this by direct action” where international governments “have sadly failed,” says one of the organizers of the Freedom Flotilla, the Palestinian American human rights attorney Huwaida Arraf. “This is not the end. We are pursuing this legally and politically,” she says about this latest “minor setback.” Arraf was part of the previous iteration of the 2010 Gaza Freedom Flotilla, in which 10 participants were killed in an attack from the Israeli Navy when it raided the ships in international waters.