The Biden Administration has taken the support promise away and now the bullies in the Mideast are able to be confident they can hurt Israel without the US to back it up.
Maybe yes, maybe no, maybe sometimes. Used to be support which deterred terrorists to some extent.
Don't worry. If Israel attacks Lebanon, I'm sure Biden will give Israel as many weapons, free of charge, as it wants.
Up till now, Biden has sent billions in military aid, along with some critical words. Why should that change?