50 years on, Lebanon remains a proxy battleground.

The 50th anniversary of an Israeli commando team's assassination of three top officials from the Palestine Liberation Organization in Beirut highlights Lebanon's continued role as a proxy battleground for Israel and its opponents. The 1973 raid was one of the first times that Lebanon became the arena where Israel and its opponents would settle their accounts. Since then, regional powers have repeatedly intervened in Lebanon, including the Iranian-backed Shiite militant group Hezbollah, which has become Israel's main adversary in the country. Palestinian factions also still have a presence, as highlighted by last week's exchange of rocket fire and airstrikes across the border between Israel and Palestinian militant groups in Lebanon.