Though, of course, Israel has a right to dismantle Hamas's military capabilities and defend itself from terror, regional escalation is simply not in the interest of the US or Israel. A war with Hezbollah in Lebanon would be a disaster and likely spiral into an all-out regional war with Iran. Israel should focus on extricating Hamas from the Gaza Strip in a humane way and eliminating Hamas's leadership.
Though this has been a tragic war, Israel must eliminate Hamas and restore deterrence with Iran and its proxy Hezbollah. Hezbollah is a terrorist army with far greater military capabilities than Hamas, and Israel cannot allow its citizens residing in the north to live under the constant threat of terrorist attacks. The UN resolution that ended the 2006 war with Hezbollah has failed to ensure Israel's security, and if some sort of new arrangement is not made, Israel will be forced to intervene.
Hezbollah will deal with Israel's belligerent and aggressive behavior at a time it deems most advantageous, as the Lebanese resistance does not just react to security incidents but makes painstaking calculations to both deter Israel from violating Lebanon's sovereignty and avoid an unnecessary and destructive escalation. Israel, backed by the US, is committing atrocious crimes in Gaza to which Hezbollah has been forced to respond.