If Iran does not change its policies, it won't be able to integrate into the international community and will become even more isolated than it is now, which likely will have a negative impact on the Iranian people. ↗
In the past there were various suggestions in the framework of financial and other agreements to benefit with Iran. But Iran interpreted those suggestions in a mistaken way and deceived the international community. ↗
Iran stands behind a substantial number of terrorist actions against us, together with Hizballah and the Islamic Jihad. It pretends to care for the Palestinians. ↗
The Security Council decided to deal with Iran's nuclear intentions. The international community will not be willing to tolerate an Iran with a nuclear capability and an Iran that collaborates with terrorist organizations. ↗
For a good chunk of Israelis, it doesn't matter who is in power when it comes to dealing with the Palestinians. Their focus was more on economic issues. ↗