CNN —Israel says it has killed Hezbollah’s most senior military official, Fu’ad Shukr, in a drone strike in the southern suburbs of Beirut, a populous neighborhood that is also the Iran-backed group’s stronghold. Fu'ad Shukr Rewards for JusticeWhatever the fate of Shukr, Wednesday’s strike is the most serious Israeli escalation since confrontations between Hezbollah and Israel began on October 8. The developments have raised the specter of an all-out war between Lebanon and Israel that could extend beyond the borders of both countries. Nasrallah has repeatedly threatened to hit Tel Aviv in response to any Israeli strike on Beirut, a move that would thrust the two countries, and the region, into uncharted waters. How long this highly calibrated tit-for-tat can go on for before the region spirals into an unprecedented war is anyone’s guess.

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Persons: CNN — Israel, Hezbollah’s, Fu’ad Shukr, Mustafa Badreddine, General Hassan Nasrallah, Fu'ad, Shukr, Israel, Majdal Shams, Nasrallah, CNN’s Ben Wedeman, Abdullah Bou Habib, ” Organizations: CNN, group’s, Tel, Popular, Units, Lebanon’s Locations: Beirut, Iran, Syria, Majdal, Golan, Lebanon, Israel, Tel Aviv, Gaza, Yemen, Iraq, Tehran