The Palestinian issue is most pressing for today in terms of human rights,
Iran's spiritual leader Ayatollah Ali Khamenei was quoted as saying by Mehr.
He added that "Zionism surpasses even fascism for cruelty."
Khamenei called on the Arab world to take a tough stance against Israel, liberate Gaza from the Israeli blockade and bring to justice, and then punish the leaders of Israel.
Israeli Special Forces on the night from Sunday to Monday conducted the operation in the neutral waters to intercept Fleet Freedom of six vessels. At least 600 human rights activists, most of them Turkish citizens moved to a blocked Palestinian enclave with humanitarian goods. At the moment, the number of victims of the Israeli special operation hit 19 people, the world media reported. Israel confirmed the death of nine people, Ria Novosti reported.