So Iran has not backed terriorist that have attacked Israel many times in the past? Iran didn't send fighters to Bosnia-Herzegovina to fight for the muslims there? Iran didn't fund and supply insurgents in Iraq? Iran wasn't sending support for Shiite muslims in UAE and other areas in the mideast to stir up protests? Iran has not repeatedly called for the distruction of the state of Israel?
And when has Israel ever launched a war of aggression? Current operations and many in the past is in response to Palistinians (some funded and supplied by Iran) launched rockets against civilian targets in Israel. Modern Israel came about because the British controlled the area and refugees from anti-jewish areas fled there. The British had control of the area following crusades and the fall of the Ottoman empire, seeking to free the Holy Lands from muslim control. The British were trying to limit the influx and reduce conflict between the Palistinians and the Jews. However, their Mandate failed and the British chose to pull out. The plan was for a Jewish state, and Arab state and international control of Jerusalem. The UN and the Jewish community accepted this plan of Partition with Economic Union, however, the Arabs did not. The Jewish Agency declared independence the day prior to the expiration of the British Mandate, renaming the country Israel and four Arab countries attacked them. This is the first war between Israel and the Arabs, the Arabs were the agressors, not Israel. Following this war, Jordan controlled the west bank and Jerusalem and Ebypt controlled the Gaza strip and Irael controlled the lands that had been the Jewish area under the British. In 1967, Egypt expelled UN peacekeepers from the Sinai Peninsula and attempted to blockade Israels access to the Red Sea. Several Arab Nations formed a coalition and postitioned troops intending to attack Israel, however, Israel launched a suprise attack and defeated these forces and countries taking control of the West Bank, The Gaza Strip, Golan Heights, Sinai Peninsula and Jerusalem. Again, the Arabs were the aggressors, not Israel. In 1973, Egypt and Syria again attacked Israel but were repelled. Once again, the Arabs were the aggressors, not Israel. In 1981, Israel did stike nuclear facilities in Iraq, this could be considered aggression, however, Iraq was supporting terriorist attacking Israel and Israeli citizens. The Israelis have invaded southern Lebenon a couple of times in response to attacks by PLO and Hama terrorist.
The Palestinians have been given chances for peace and self government. Israel gave them limited self-rule in the 1990s, but the Palestinians have elected known terrorist for their government. When the PLO refused to continue operations against Israel and instead attempted to keep the peace, the Palestinians turned to the more agressive Hamas factions. Since then, Hamas has repeatedly sent rockets into Israel against civilian targets and has supported/initiated many terrerist attacks against Israel.
So in all this, where is this war that Israel initiated? Israel has always responded to provocation. Their control of the contested regions stems from the Arabs attacking them not the other way around. The Palestinians were part of the countries that started wars with Israel and they lost. If you start a war and lose, you can expect to have to live with the results, including the victor taking lands. There are Palestinians in Israel who do not support terrorist and are just as prosperous and peaceful as any other Israeli citizen. If the peoples of the "occupied" areas would act the same, they would have better prosperity and living conditions also. But instead, they lauch rockets at civilians and then whine when Israel responds to those attacks.
A Nuclear armed Iran is a threat to Israel. Iran continues support terrorist acting against Israel. So give Israel the bunker busters, heck, send them a squadron of F-117 Stealth Fighters and a few B-2 Stealth Bombers along with them. Israel is not a threat to US security and interests, Iran is.