Tensions surged after Israel launched fresh strikes on Beirut’s Dahiyeh suburb, prompting a dramatic warning from Iran. Iranian lawmaker Ebrahim Rezaei vowed a “decisive and painful” response and urged Israelis to “watch the sky tonight,” fueling fears of imminent retaliation. The threat came after the I.D.F. said it targeted Hezbollah infrastructure following rocket fire from Lebanon. As residents fled parts of Beirut fearing more bombardments, concerns grew that the fragile ceasefire framework could collapse. With attacks continuing across southern Lebanon, the risk of a wider regional confrontation is once again rising sharply.

Senior military adviser to Iran’s supreme leader, Mohsen Rezaei, said that missiles were ready to be launched after Israeli threats to target Beirut’s southern suburbs.

Iran threatened to retaliate against the United States and Israel for a fresh attack on Beirut on Sunday, further dampening hopes for a lasting peace as the Middle East war…