More than 10 people have been killed after Israeli commandos stormed a convoy of ships carrying aid to the Gaza Strip, the Israeli army says.
Armed forces boarded the vessels overnight, clashing with some of the 600 protesters on board.
It happened about 40 miles (64 km) out to sea, in international waters.
Israel says its soldiers were shot at and attacked with bars and knives; the activists say Israeli troops came on board shooting.
The European Union has called for an inquiry to establish what happened.
Pretty harsh response from the Israelis here.