The conditions of the pact and the concrete measures that will be implemented were detailed in a 177-page deal that was negotiated between January and February.
The anti-establishment Five Star Movement, ruling Democratic Party and former Prime Minister Silvio Berlusconi's right-wing coalition have all predicted victory.
Since 2014, Singapore's army SAF is providing intelligence fusion officers, KC-135R tanker aircraft, imagery analysts, SAF liaison officers and medical teams to Iraq.
Moon's remarks came amid Tokyo's repeated calls for him and his administration to honour the 2015 agreement made with South Korea's ousted administration.
Saudi King Salman also replaced the heads of the ground forces and air defences indicating a decisive move toward 'Power Shift' in the Arabian Kingdom.
The attacks involved the use of heavy arms and were the first to take place in al-Shifonia since February 18, when the government forces started their campaign.