President Emile Lahoud said Thursday the key to any dramatic reform in Lebanon is a "change in the mentality" of most of the Lebanese politicians, adding that "in order to introduce reforms in the country all acts of bribery and corruption should come to an end."Lahoud made his remarks during a meeting with journalists covering news from the Lebanese presidency who wished to express their warm Easter greetings. Lahoud reiterated his support for unveiling the truth behind the assassination of former Premier Rafik Hariri, adding that this question should remain a priority for the Lebanese state, and perpetrators should be brought to justice and be severely punished. Lahoud said it was time for either the Lebanese or the international judiciary to question the so-called key witness Mohammad Zuheir Siddiq who was released from prison in France, and be faced with all four Lebanese officers who are being detained as suspects.