Firstly, all the citations (I have added), are reliable and authoritative sources, some of them arguably more authoritative than the IISS source. The ISS source certainly belongs on Wikipedia, but not ahead of the other sources, which is what adding a separate column for it indicates. There is no SYN here, since we are simply reporting what is contained in the sources. As for the suspected Israel estimates,  Avner Cohen's book contains a table of estimates. As per WP:RS, we should report on the range of estimates, rather than cherry picking one estimate and reporting that. There is no justification for cherry picking one source - between equally reliable sources - except POV.