How did the Israel-Lebanon War of 2006 start?

The Israeli-Hezbollah War of 2006 began from Hezbollah's gross misinterpretation of how strongly Israel would respond to its illicit activities. The War had a number of causes that included, but were not limited to:

  1. Hezbollah kidnapped two Israeli soldiers on the Lebanese border: Regev and Goldwasser, violating the strong Israeli sense that no soldier can be ever left behind. This prompted an Israeli incursion into Lebanon to retrieve the soldiers.
  2. Hezbollah, upon seeing the Israeli soldiers, launched Soviet Katyusha Missiles into Israel, causing the Israelis to amp up their incursion to a proper invasion and airstrike.