Article is paywalled, yet... Israel spent a lot of effort over past 20 years in preventing russia from supplying Iran and Syria with modern air-defense systems

Article is paywalled, yet... Israel spent a lot of effort over past 20 years in preventing russia from supplying Iran and Syria with modern air-defense systems like S400 and portable anti-tank/aircraft systems as they tend to quickly end up in hands of hamas and hezballah. Sending any type of weapons to Ukraine will most likely result in russia paying back in the same coin, hence all of the visible assistance to Ukraine is humanitarian aid. There is also invisible aid, as Israeli ambassador to Germany stated last week, but it's invisible. There is also an issue of russia in Syria, where it can interfere with local Israeli operations. And once in a while russia just for giggles jams signals over north Israe.