@Chandler to answer your general question: Yes, Israel has a right to exist. The world felt ashamed at what happened in WWII and Israel is the result.
I can understand why Jews want a safe place - that they can protect. The international community - having said “never again,” seem to have meant never lift a finger. There have since been other genocides while the world sat by: 1971 Bangladesh / East Pakistan, with as many as 3,000,000 killed;1975-79 Cambodia, nearly 2,000,000 killed; 1994 Rawanda, 1,000,000 killed; Bosnia, East Timor, Gautemala, all with at least 200,000 people killed in ethnic cleansing.
With hindsight it is easy to say that it would have been better for Jews to migrate to the established democracies, like the US or the UK. But that’s no guarantee of safety, either. After all, Germany was a democracy when the Nazis took over with their hyper-nationalism and racism.
But simply being a state doesn’t mean that Israel will be around forever.
Ironically, Israel continues sowing the seeds of self destruction by subjecting another people to exist in a bombed out concentration camp where the military carefully calculates and allows in only the minimal amount of calories to prevent starvation. At home, virulent racism and hyper-nationalism have all but swept dissenting voices from the streets. @Thule this is why Israel does not want to accept refugees.
If they keep on this path I fully expect my daughter to see the end of Israel.