Lebanese Prime Minister-designate Saad Hariri announced on Tuesday that he wanted justice for the assassination of his father, former PM Rafik Hariri. He made his remarks from The Hague where the Special Tribunal for Lebanon kicked off closing arguments into the suicide attack that claimed Rafik Hariri’s life and 21 others on February 14, 2005. "There is no doubt that this day is difficult for me, as the son of Rafik Hariri," Saad Hariri told reporters outside the Special Tribunal for Lebanon in Leidschendam, a suburb of The Hague. "From the start, we demanded justice because we believe that justice and the truth protect Lebanon. This is what we always wanted and we never resorted to revenge." Prosecutors said Rafik Hariri was targeted by the Lebanese “Hezbollah” party because he opposed Syrias control over Lebanon. The tribunal is unique in international justice because it is trying the four defendants in absentia. While the younger Hariri said he had "no doubt" that Syria had a "huge problem" with his father, he would "deal with this issue as a responsible official" to maintain his countrys fragile political balance. Hezbollah chief Hassan Nasrallah has refused to hand over the suspects and warned the tribunal "dont play with fire" while Syrian regime leader Bashar al-Assad says it is a tool to "pressure ‘Hezbollah’". The four defendants went on trial in 2014 accused of core roles in the Valentines Day attack on Beiruts waterfront targeting Hariri, who resigned in October 2004 over Syrias role in his country. Salim Ayyash, 50, is accused of leading the team that carried out the attack, while Assad Sabra, 41, and Hussein Oneissi, 41, allegedly sent a fake video to the Al-Jazeera news channel claiming responsibility on behalf of a made-up group. Hassan Habib Merhi, 52, is accused of general involvement in the plot. The alleged mastermind, “Hezbollah” commander Mustafa Badreddine, was indicted by the court but is now believed to have died while leading the party’s forces fighting with the Syrian regime in May 2016. However, prosecutors said their case -- which relies on mobile phone records allegedly showing the suspects conducting intense surveillance of Hariri from just after his resignation until minutes before the blast -- was "circumstantial" but "compelling". Prosecuting counsel Nigel Povoas said the huge scale of the attack "undoubtedly had a political purpose" linked to Hariris opposition to Damascuss long involvement in his country. "The scene was plunged into darkness and horror, cars were eviscerated, incinerated and on fire, people were on fire. Lebanon itself was plunged into darkness and horror, that was exactly what was intended by the attack," he told the court. "Hariri was perceived by those who supported Syrian control as a severe threat to their interests and security, a proxy of the West," he told the court. "This is the reason, the non-personal motive, behind the crime." Prosecutors said the suspects had been feted in Tehran and Damascus, “Hezbollahs” backers. As it was, the bombing had the opposite effect -- triggering a wave of mass demonstrations that ended with the departure of Syrian forces from Lebanon after a 30-year presence, after which Saad Hariri became premier. The verdict in the trial is expected to be announced early next year. Lawyers for the prosecution will give closing arguments over two more days, followed by lawyers for the victims and then attorneys for the defense, finishing up next week. The court has heard evidence from more than 300 witnesses and amassed 144,000 pages of evidence.