Saudi Arabia today directly accused Iran of supporting the Houthi rebels in launching the missile attack targeted at Riyadh's international airport stating that this may be construed as an 'act of war'.<br/>'<br/>A statement by the Command of the Coalition put out by the Saudi Press Agency stated that the ballistic missile attack was "a blatant act of military aggression by the Iranian regime, and could rise to be considered as an act of war against the Kingdom of Saudi Arabia, and thus affirms the legitimate right of the Kingdom to defend its territory and people in accordance with Article (51) of the U.N. Charter."<br/>'<br/>In response to the attack , Saudi led coalition today temporarily closed all Yemeni land, sea and air ports. The Saudi statement however, said the closures would take into account the delivery of humanitarian supplies. <br/>