Israel probably used new rocket that evaded Russian defenses to hit terrorist in Syria

Algemeiner:

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One of these involved the technical aspects of the operation, which Israeli news website nrg suggested may not have been carried out by the Israel Air Force (IAF), but rather by advanced, long-range ground-to-ground missiles at Israel’s disposal on the Golan Heights, eliminating the risk of downed planes or pilots.
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As for comments on Arabic social media taking issue with Russia’s inability to intercept or curb the alleged Israeli strike in Syria, Magen asserted that Israel has proven military and technological capabilities that even Russia couldn’t match.
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The Russians are probably well behind some of the more sophisticated weapons built by the Israelis.  I suspect it probably was a missile attack and not an air attack.   The precision of the missile for outpaces anything in Hezballah's arsenal.  To the extent there was a message in this strike, it was probably to the Iranians that they will not be safe from Israeli weapons even if they have Russian defensive systems.

Meanwhile, as for that Hezballah threat:

Amid Tensions on Northern Front, Israel Successfully Tests Anti-missile System

The David's Sling interceptor was developed jointly with the U.S. to defend against mid-range missiles, like those used by Hezbollah.