Efforts to "discredit, hinder, or politicize" the UN tribunal investigating the 2005 assassination of former prime minister Rafik Hariri only increase instability in Lebanon and the region, and "should not be tolerated," said US State Department spokesman PJ Crowley Friday.During a daily press briefing in Washington, Crowley said, "The tribunal was created at the request of the Lebanese Government to the United Nations, and it’s a professional and independent tribunal with a mandate from the United Nations Security Council and the support of the international community. And politicizing and interfering with the work of the tribunal does not serve the interest of the Lebanese people."He added that, "we condemn threats as yet another maneuver by Hizbullah to try to deny the Lebanese people the truth and justice that they deserve. There’s a presentation by Hassan Nasrallah that somehow one has to choose between justice and stability. And we reject that as a false choice."