Reports that two Iranian ships are heading for Gaza with humanitarian aid have given rise to new threats of a clash between Israel and the Islamic Republic.

According to Iran's semi-official Mehr news agency, one of the ships was scheduled to depart the Port of Khorramshahr this week. Still, conflicting reports abound about whether the ship has already left.

"This ship will pass through territorial waters of Oman, Yemen and Egypt before it reaches Gaza. It is said that the ship contains only humanitarian aid and there are no peace activists on board," the agency said.

Despite strong international pressure, Israel has not lifted its blockade of Gaza out of fear Tehran will send rockets and weapons to the terrorist group Hamas by sea.

Meanwhile, Israel's cabinet has launched its own investigation into the May 31 Turkish flotilla incident. Nine pro-Palestinian activists died when Israeli commandos were attacked while boarding one of six so called humanitarian aid ships.

Israel's Prime Minister Benjamin Netanyahu warned the country faces "dark days" ahead, as Israel's enemies try to take away its right to defend itself.