Israel rejected proposals on Thursday for a ceasefire with Hezbollah, defying calls from allies including the United States for a halt in fighting. Israeli warplanes bombarded Lebanon, including a strike on the southern suburbs of Beirut that shook the capital. On its own side of the border, the Israeli army staged an exercise simulating a ground invasion. The relentless pressure on Iran-backed Hezbollah in Lebanon, including intense airstrikes and assassinations of some of its senior...