Israel’s military chief told troops to prepare for a possible ground offensive in Lebanon as heavy Israeli airstrikes continued for a third day and militants targeted the cities of Tel Aviv and Eilat. The strikes on Lebanon, and the subsequent reduction in the military power of the Shiite militia group Hezbollah, have laid the foundation for a possible ground incursion, Israel Defense Forces’ chief of staff Herzi Halevi told troops on Wednesday. “You hear the jets overhead; we have been striking all day,” the IDF chief said as he visited a troop exercise on the northern border, according to a …