Israeli Shayetet 13 commandos boarded the Gaza Freedom Flotilla while still in international waters trying to break the ongoing blockade of the Gaza Strip; nine Turkish citizens on the flotilla were killed in the ensuing violent affray.

Shayetet 13 is a naval commando unit of the Israeli Navy and one of the primary reconnaissance units of the Israel Defense Forces. Shayetet 13 specializes in sea-to-land incursions, counter-terrorism, sabotage, maritime intelligence gathering, maritime hostage rescue, and boarding. The unit is trained for sea, air and land actions. The unit has taken part in almost all of Israel's major wars, as well as other actions.

Six civilian ships of the Gaza Freedom Flotilla were raided by Israel on 31 May 2010 in international waters in the Mediterranean Sea. Nine of the flotilla passengers were killed during the raid, with 30 wounded. Ten Israeli soldiers were wounded, one seriously. The exact sequence of events is contested, in part due to the IDF's confiscation of the passengers' photographic evidence. The flotilla, organized by the Free Gaza Movement and the Turkish Foundation for Human Rights and Freedoms and Humanitarian Relief (İHH), was carrying humanitarian aid and construction materials, intending to break the Israeli naval blockade of the Gaza Strip.

The 2010 Gaza Freedom Flotilla was a small fleet of ships by the Free Gaza Movement and the Turkish Foundation for Human Rights and Freedoms and Humanitarian Relief (İHH) carrying humanitarian aid and construction materials with the intention of breaking the Israeli blockade of the Gaza Strip. In typical circumstances, aid is first brought to Israel to be inspected and then transferred to Gaza.

The restrictions on movement and goods in Gaza imposed by Israel date to the early 1990s. After Hamas took over in 2007, Israel significantly intensified existing movement restrictions and imposed a complete blockade on the movement of goods and people in and out of the Gaza Strip. In the same year, Egypt closed the Rafah border crossing. The blockade's stated aims are to prevent the smuggling of weapons into Gaza and exert economic pressure on Hamas. Human rights groups have called the blockade illegal and a form of collective punishment, as it restricts the flow of essential goods, contributes to economic hardship, and limits Gazans' freedom of movement. The land, sea, and air blockade isolated Gaza from the rest of the occupied Palestinian territory and the world. The blockade and its effects have led to the territory being called an "open-air prison".