That is a line that signatories of the Wassenar arrangement cannot take. Israel is not officially a signatory but their own laws pull-requests the Wassenar arra

That is a line that signatories of the Wassenar arrangement cannot take. Israel is not officially a signatory but their own laws pull-requests the Wassenar arrangement and its amendments. The agreement legislates what dual-use systems (that is weapons systems that also have civilian use) can countries export and under what legal obligations and conditions. According to the agreement, producer/seller of dual use weapons systems is under obligation to ensure that the buyer is not abusing the weapon. Break in compliance makes the producer/seller culpable. I think what this means is that if a country wants they can find legal ways of making Israel culpable. Realistically though, I doubt USA will let that happen.