This week saw a dizzying escalation in the 11-month-old conflict between Israel and Lebanon´s Hezbollah. Hezbollah's leader vowed to retaliate, and on Friday the militant group launched dozens of rockets into northern Israel. Many fear the events are the prelude to an all-out war between Israel and Hezbollah. An Israeli airstrike Friday brought down a high-rise building in Beirut´s southern suburbs, a Shiite-majority area known as Dahiyeh where Hezbollah has a strong presence. The Israeli military said the strike killed Ibrahim Akil, the commander of Hezbollah´s elite Radwan unit, as well as other top leaders of the unit.