Israel has a right to exist:

The purpose of a Jewish homeland is that for the first time in thousands of years, Jews would no longer be threatened by hostile majorities, because they would be the majority, in control of their own state.  No more pogroms, no more Holocausts, no more anything.  Everywhere Jews went in the past they were persecuted.  It turned out the only way for Jews to be safe was to be in control of their own destiny.

Everybody has a right to be safe.  As the declaration of independence stated, everyone on Earth has the God-given right to life, liberty, and the pursuit of happiness.  Jews deserve these rights too, and they weren't getting them from all past governmental models.  Only an explicitly Jewish state, with the rights of Jews enshrined into the constitution, run by Jews, would ever protect Jews.  The moral necessity of a Jewish state was made clear after World War II.

Perhaps a better spot could have been found for a new Jewish state, populated and run by Jews, than Palestine.  Maybe it could have been put in South America or the U.S.S.R. or Canada or something.  But it's too late to quibble about that now.  Israel has been around for 75 years, people have put down their roots there.  Israel has been 'grandfather claused' in, because there are literally grandchildren in Israel who have never known life outside of Israel.  Israel now has as much a right to exist within its current borders as all other nations on Earth.

Once you claim that a nation that is 75 years old still doesn't have 'birthright' citizenship, and can be transplanted somewhere else, the validity of all nations become suspect.  If a country isn't legitimate because the people weren't the original inhabitants of the land, then America has no right to exist.  The same for every nation, really.  The Han did not originally inhabit the current territory of China, they expanded into it.  The Bantu people did not originally control the territories of Africa they now dwell in.  The Turks are not the original inhabitants of Turkey.  And so on.  If you can't eventually say a country has existed long enough to put down roots, and people who were born and raised in a place deserve to continue living under the same arrangements as they're used to, you have created a system of perpetual war, upheaval and chaos.  This benefits no one.

Furthermore, the options for a new state of Israel weren't very good.  It had to be carved out of some European colony or other, because no other sovereign state was about to give up its territory just to please some vagabond Jews.  Once you've narrowed it down that far, Palestine, which was a colony of the United Kingdom, and the historical and religious homeland of the Jews, made by far the most sense.  Did this displace millions of Palestinians?  Sure, but what is that compared to the Holocaust?  Jews suffered far worse to earn their state than Palestinians suffered by losing some territory.  The 'Palestinians' don't even exist, they're just more Sunni Arabs in a region full of Sunni Arabs.  They could live just as well in Jordan, Syria, Lebanon, Egypt, Iraq, Saudi Arabia, etc. as in the territory of now-Israel.  They speak the same language, practice the same religion, have the same ethnicity, as almost the entire Middle East.  They had no particular need to live in Palestine per se.  They were not a persecuted minority.

There was no historical concept of a 'Palestinian.'  It's not like it was their sacred homeland or something.  They went from being subjects of the Roman Empire, to subjects of the Ottoman Empire, to subjects of the British Empire.  They never existed as a people or state, they were just random people in a much larger entity.  It was only happenstance that they lived in this particular corner of their empire instead of some other corner.

Palestinians have the right to life, liberty and the pursuit of happiness.  But they have no particular right to a country of their own.  It has not yet been established that they need a state of their own to enjoy these rights.  The historical record doesn't show this.  They lived just fine as a portion of other empires for thousands of years, so they can continue to live at the same level of well-being as a portion of some other state.  I've suggested again and again that Palestinians be paid a handsome sum, enough to support them for life, to move to any other neighboring Arab country.  We could also pay an enormous sum to the receiving countries to make sure it's profitable for them to take the Palestinians in.  Any amount of spending would be cheaper than the incessant wars we have to fight over the Israel-Palestine conflict.

Israel should be a pure Jewish country that includes the current territory of Israel, the Gaza Strip and the West Bank.  Only then can it be secure, and people will stop using the fake cause of the Palestinians to try to deny Israel its right to exist.  The real goal is genocide of the Jews, the 'poor oppressed Palestinians' are just a means to an end.  Otherwise, if these foreign states actually cared about the Palestinians, they could much more easily adopt my 'pay them money to leave' plan than the current 'destroy Israel and drive the Jews into the sea' plan.

This is the only resolution to the Israel-Palestine conflict that ensures the original purpose of the founding of the Jewish state.  Dissolving Israel and Palestine into a single country with equal democratic voting rights would make the entire purpose of the Jewish state meaningless.  Jews would no longer be in firm control of their own country, such that their own state government could no longer oppress them.  They'd be right back where they started, a hated minority inside their own homeland, which could be pogrommed or genocided at any moment.  The Jews moved to Israel expressly to eliminate that eventuality.  Likewise, ethnic cleansing the Jews back to America, Europe, Russia or wherever would again prevent the entire purpose of Israel -- a safe refuge for Jews to no longer be under anyone else's power, to no longer have to fear hostility from anyone.

Most of the Arab world has accepted Israel's right to exist, and has little sympathy for the Palestinian cause.  Through a series of wars that started immediately upon Israel's founding until 1973, the Arab world found out crossing Israel was a bad idea and eventually gave up on it.  There is only one country left in the middle East that categorically rejects Israel's right to exist -- that's Iran.  Iran is the last country left in the world that is preventing peace in the Middle East.  If we could just eliminate the regime in charge of Iran and put in its place a pro-Israel government, this 100-year war for Israel's existence could finally come to an end.

Israel has a moral right to exist.  They have a legal right to exist, enshrined into the United Nations.  They also have a practical right to exist -- as a nuclear power anyone who threatens their existence will be vaporized.  They also have an economic right to exist -- they are at the forefront of various technological breakthroughs that are of benefit to the entire world economy.  However, Iran thinks it can unilaterally overthrow all of this.  Iran has never recognized the state of Israel, and is now proclaiming that the war will only end once Israel has ceased to exist.

You can be charitable and claim Iran does not mean that it wants to kill all ten million Israelis, it just wants to abolish the state of Israel.  This would mean all Jews leaving Israel for some other territory, or living side-by-side with the Palestinians as co-citizens.  But I've already discussed that all of these options are unacceptable for Israel, or from the perspective of any disinterested moral bystander, who thinks Jews have suffered enough, they don't need to suffer more by being a minority, surrounded by Palestinian neighbors who hate them and want to kill them, and will be voting in a government out to get Jews in the next parliamentary election.  That's insane.

Israel finally got a military strong enough to protect itself.  It's not going to disband and let evil people run riot over them just because Iran thinks they should.

So there are two possible formulae for peace -- the Israeli formula is that Iran is regime-changed, after which the new Iranian government stops funding and arming terrorists who continuously attack Israel, all while building up a belligerent arsenal of missiles and possible nuclear weapons to threaten Israel with.  The Iranian formula is three possible, completely unacceptable futures for Jews -- they're all killed, they're all ethnically cleansed from their homeland and left to wander as a hated minority in the world again, or they all stay in 'Palestine' but once more become a hated and powerless minority with no military to protect themselves.

Obviously the peace formula we, as moral bystanders, should take is Israel's formula.  There are plenty of bad countries doing bad things to people where we should sympathize with one side over the other, but there's no need to go to war ourselves, because it isn't in our vital interests to do so.  One example is Afghanistan.  I sympathize with the women of Afghanistan, but I'm not going to go die for them.  The same should have been the case for Israel.  If Israel wanted to pick a fight with Iran, that should have been Israel's business, not ours.  I'm not Israel's rent-a-cop.  It's one thing to say America should look after its own interests -- it's another to say Iran is the good guy, Israel is the bad guy, and Israel should be wiped off the map.  One position is eminently reasonable, the other is not.

Unfortunately it's too late for America to pick a neutral, isolationist position.  The war has already begun and America's reputation as a winner is at stake.  If we allow lowly Iran to bully us, with a military 1/100th our size, we'll be the laughing stock of the world.  It will have disastrous downstream consequences.

So now we've reached the core of the problem.  We're committed to war with Iran.  The war cannot end until either Iran is regime-changed or Israel ceases to exist.  The world economy is going to collapse if we don't do something to defeat Iran soon.  At least 20% of the world's fertilizer is dependent on the strait of Hormuz.  If the world's food supply is reduced by 20% hundreds of millions or billions of people will definitely starve to death.  Surrender is unacceptable because Israel has the right to exist.  There is no quick solution to the war short of nuclear weapons.  The threat of nukes should be enough, but if Iran is suicidal enough to accept being nuked so that it can continue to harass Israel in perpetuum, with the goal to eventually totally destroy it, then that's on Iran's head.  I would start with tactical nukes on Iranian military positions to demonstrate our resolve, then proceed to a declaration that all Iranians must evacuate their cities, and if that wasn't enough I would nuke Iran to cinders, killing however many of them it took for them to admit defeat and unconditional surrender.  A people that refuses to learn and refuses to live in peace with their neighbors, who has denied others the right to exist and endorsed genocide, has no further right to live itself.  Violators of human rights have no human rights.  It's a contract based world -- a give and take world.  Don't expect us to respect your right to exist when you don't respect ours.