A day after thousands of people were injured across Lebanon when pagers used by militant group Hezbollah exploded, a new spate of explosions killed at least 20 people and injured at least 450, according to the Lebanese Health Ministry. At least 12 people were killed and 2,800 injured in Tuesday’s attack. Though Israel has not publicly claimed responsibility for the attack, the Israelis informed the U.S. about the attack after it took place through intelligence channels, according to two U.S. officials speaking on the condition of anonymity to discuss sensitive matters. The Israelis did not alert Washington about the specifics of the attack before it took place, the officials said.