The European Jewish Congress (EJC) has called on the European Union and European governments to immediately ban the Turkish group IHH, which led one of the six Gaza Flotilla ships, and similar groups. "Organizations affiliated with and used as a front for terrorist groups like Hamas and al-Qaeda have to be outlawed with immediate effect," said EJC President Moshe Kantor in a statement.

According to a report issued in 2006 by the Danish Institute for International Studies, the IHH maintained links with al-Qaida and a number of "global jihad networks." The report also said that the Turkish government had launched an investigation into the IHH which began in December 1997 after receiving intelligence that the IHH had bought automatic weapons from Islamist terrorists. Following the revelation, the Turkish government launched a raid on the organization's Istanbul offices, where they found weapons, explosives, and instructions for bomb-making. The report added that an examination of documents found at the IHH office indicated that the group was planning to take part in terrorist activities in Afghanistan, Chechnya, and Bosnia.

According to the study, a French intelligence report found that in the mid-1990s IHH leader Bülent Yildirim recruited soldiers for jihad [Muslim Holy War] activities in a number of Islamic countries, and that the IHH transferred money, firearms, and explosives to jihadists in said countries. "It is evident that the IHH has been an organization long associated with terror and global Jihad" Kantor continued.  "Such organizations need to be immediately exposed so Europeans will not be deceived into believing that they are a legitimate humanitarian organization." 

It had become clear that this flotilla did not have a humanitarian goal when its organizers rejected repeated calls to pass their aid through Egypt or Israel, the EJC said in a statement.