Tehran will continue to destabilize the Middle East and spread terrorism throughout the world, Prime Minister Benjamin Netanyahu’s office warned late Saturday night after sanctions against Iran were officially liftedn.“Israel will continue to monitor Iran's negative activities and will take all necessary measures to maintain its security and defend itself," the Prime Minister's Office said.It warned that “Iran has not abandoned its aspirations to acquire nuclear weapons and continues to destabilize the Middle East and spread terrorism throughout the world.”Unless there is an appropriate response to each Iranian violation of its deal with the six world powers “Iran will surmise that it can continue to develop nukes, destabilize the region and spread terror," the prime minister's office warned.Public Security Minister Gilad Erdan said that the deal’s implementation marks "a new and dangerous time in which Iran is free of most economic sanctions without having to stop its nuclear plan and without having to give explanations about its military activity as it had to in the past."Erdan pointed out Iran continues supplying arms to Hezbollah, Hamas and other terrorist groups, intervening in Gulf States' internal affairs and violating UN Security Council decisions about developing ballistic missiles."This is a difficult day for all the countries in the region, which hoped that Iran will not be able to obtain nuclear weapons and stop its negative intervention in the area," he said."Israel will continue following and demand from the international community not to ignore Iranian violations, in order to ensure that they won't be surprised like in the case of North Korea.""We cannot allow the optimism of the IAEA report to blind the international community," said Israel's ambassador to the UN, Danny Danon. "The removal of sanctions greases the wheels of the terror sponsored by Tehran around the world and Israel will continue to closely monitor all of Iran's activity, on both the nuclear threat and the threat of terror." Yisrael Beytenu chairman Avigdor Liberman called it “symbolic” that shortly after sanctions on Iran are lifted, Tehran plans to hold a Holocaust caricature contest on January 27, International Holocaust Remembrance Day.“While Iran is busy with Holocaust denial, the whole world is living in denial and repressing the results of their agreement with Iran, which will be incredibly similar to the Munich Agreement and the accord signed with North Korea,” Liberman wrote on Facebook.