Israel is more than capable of handling Hezbollah, Hamas and keeping Iran and Syria at bay with one carrier support group, USS Eisenhower would be more than enough. USS Ford, USS Eisenhower, USS Whitney and British support groups and including the DESRON 50 destroyer group and unknown submarines is way overkill firepower for the implied escalation expectation. Also B1-B’s have already been deployed in the last 24 hours at Incirlik. There must be something on a much larger scale brewing.
Israel is determined to finalize its enemies, including Iran no doubt, given that the IDF and most Israeli citizens want to clean the clocks of the Iranian leadership, and this may be the only opportunity they have. With the amount of firepower in the region, all this can be taken out in a few short hours/ handful of days.
From this vantage point, it appears that the implementation of this amount of military hardware in the region isn’t to keep Iran and Syria at bay, more likely a warning to their possible allies.