U.S. Ambassador Michel Issa met Monday with President Joseph Aoun, as Israel and Iran traded fire after Israel's bombing of Beirut's southern suburb.

Issa said the U.S. places great importance on Lebanon and has decided that Sunday's events must not expand further. "What happened yesterday is a political message, and we in the United States have decided that the confrontation must not expand any further," Issa said after meeting Aoun.

Israeli strikes targeted overnight into Monday Habboush Srifa, Zefta, Yater, Nabatieh, Safad al-Battikh, Sojod, Jabal Safi, al-Mansouri, Ainqana, al-Sharqiyeh and al-Hallousieh, as Israel and Iran exchanged attacks over Israel's bombing of Dahieh.

Four people were killed in the strike on Zefta, the national News Agency said, adding that several others were killed in Srifa.

Air raid sirens sounded in Israel on Sunday as its military worked to intercept barrages of incoming Iranian missiles for the first time since an April ceasefire took hold in the Middle East war.

The Israeli army reported the attack just hours after Tehran had threatened to retaliate for a new Israeli strike on Beirut's southern suburbs.

Iran, Hezbollah, and others have repeatedly dragged both Israel and Lebanon into "pointless and destructive conflicts" and "Hezbollah has a simple choice: it can continue fighting a pointless war, or it can finally allow the return of the displaced and the reconstruction of Lebanon," a U.S. official said on Sunday.

In remark to U.S. news portal Axios, the official claimed "the terms on the table are fair, have the consent of both sovereign governments, and provide a clear path to end the fighting."

Israel's military struck alleged Hezbollah command centers in Beirut's southern suburbs in response to rocket fire on northern Israel, Prime Minister Benjamin Netanyahu's office said Sunday.

"In accordance with the directives of Prime Minister Netanyahu and Defense Minister Katz, the Israel Defense Forces have just struck a militant command center in Beirut's Dahiyeh district, in response to Hezbollah's fire towards Israeli territory," his office said.

Israel's military said Sunday that it had intercepted two projectiles launched from Lebanon into Israeli territory, despite a new ceasefire agreement announced this week aimed at ending hostilities between Israel and Hezbollah.

Lebanese President Joseph Aoun told CNN on Friday that the Lebanese people are fed up with the war with Israel.

He said Hezbollah chief Naim Qassem does not represent the Lebanese people. "These people are not yours," Aoun told Qassem, as he accused Iran of using Lebanon as a "bargaining chip" in its conflict with the U.S. and Israel.

Prime Minister Nawaf Salam on Friday urged Iran to stop treating his country, where Israel and the Tehran-backed Hezbollah are at war, as a "bargaining chip" in its negotiations with Washington on the Middle East conflict.

"If I may address a word to Iran, it is this: have mercy on our south, stop treating it and its people as merely a bargaining chip to improve the terms of your negotiations," Salam told a press conference for a U.N. aid appeal for Lebanon.

U.S. President Donald Trump told journalists in a press conference that he thinks "progress is made" in the Lebanese-Israeli conflict.

"It would be really nice if Lebanon could have some peace," Trump said. "Lebanon has been under attack for so many years and always like an underdog, and it would be really nice if it could end," he added.

Israeli strikes on south Lebanon and West Bekaa killed eight people and wounded 15 others on Thursday, hours after a new ceasefire was announced between Lebanon and Israel, the Health Ministry said.

An Israeli strike in on Sohmor in West Bekaa killed five people, while another attack near the southern city of Tyre killed three more, the ministry said.