@guerrillarain AFAIK it's mostly political needs. Israel provides friendly access to US presence in the middle east, stores ammunition exclusively for US military use, donated land for US intelligence bases for int collection, is developing advanced military tech upgrades that are sold exclusively to the US (there was a kerfuffle when Netanyahu tried to sell some to China and Obama told him to quit it), and so on.

It's the same reason why Arab nations are secretly running heavy trade relations with Israel despite publicly denouncing it.