Answered in the first 5 words of the subtitle:

> According to our elected leaders, we should be very scared of the possibility that Iran could get a nuclear bomb. But Israel already has them, and ...

For the past 80 years, it's been all-but-guaranteed that you won't win an American election if you seem insufficiently pro-Israel.

Yes, there are plenty of objective arguments for America's foreign policy being far less pro-Israel than it has been for 8+ decades. US Sec. of State (and former US Army General) George Marshall made those arguments to US President Harry Truman back in 1948 - and was overruled. Truman had staked out a pro-Israel position before his previous election (which he had won), then won another election 6 months after overruling Marshall.

- If your real priority is sounding sophisticated, you can make fancy arguments about America being far too pro-Israel.

- If your real priority is understanding why America is so pro-Israel, then you need to shut up with the fancy arguments, and analyze the American electorate's strong preference for that.

- And if your real priority is winning American elections, then you need to present as "obviously" pro-Israel. And ignore the idiots making fancy arguments.

Could you elaborate on the reasons for this pro Israel preference?

I thought that it was mostly because Israel is backed by evangelists who have a large electorate + lobby from the people with Jewish roots or faith.