Hamas marked the three year anniversary of Operation Cast Lead on Tuesday, saying Israeli threats to launch another large-scale operation in Gaza to root out terrorist infrastructure was nothing more than "psychological warfare and propaganda.""These threats do not frighten the [Hamas] movement or the Palestinian people," the Ma'an news agency quoted Hamas spokesman Sami Abu Zuhri as saying at a press conference.Abu Zuhri referred to Israeli "war crimes" and "genocide" in the Gaza Strip, stating that the international community should "deal with the occupation as a terrorist entity, the most dangerous in the world."