U.S. President Donald Trump said Sunday he will call Israeli Prime Minister Benjamin Netanyahu to urge him not to retaliate against Iranian missile strikes on Israel, U.S. news outlet Axios reported.

"I am going to call Bibi right now and tell him not to retaliate," Trump was quoted as saying by Axios journalist Barak Ravid in a phone interview, using the Israeli leader's nickname.

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 threatened to retaliate against the United States and Israel for fresh strikes in Beirut's southern suburbs on Sunday, further dampening hopes for a lasting peace as the Middle East war reached its 100th day.

The United States said it shot down a pair of Iranian drones threatening the Strait of Hormuz, the latest escalation of violence as the war crept into its 100th day on Sunday with no end in sight.

Iran still has "21, 22 percent" of its missiles left, U.S. President Donald Trump said, in a week in which Tehran fired dozens of them toward regional neighbors, despite a sputtering ceasefire.

The release of frozen Iranian funds has become a key issue in negotiations between Tehran and Washington aimed at ending their war, a senior Iranian official said.

Iran fired missiles at U.S. allies Bahrain and Kuwait on Saturday, after renewed American strikes against it, drawing a furious response from the Gulf monarchies and further undermining a fragile truce.

Leaders from across the European Union and the Balkans gathered in Montenegro on Friday to discuss expanding the bloc to include countries in the region, seen as a key area in countering security and economic threats posed by Russia and China.

The EU-Western Balkans summit, being held in the Adriatic Sea coastal town of Tivat, brings together EU leaders including President Emmanuel Macron of France and German Chancellor Friedrich Merz, European Commission President Ursula von der Leyen as well as the heads of candidate countries in the Balkans.

President Vladimir Putin said Thursday that Russia will strengthen its air defenses to counter recent Ukrainian drone attacks, which have reached deep inside his country and cast a cloud over his showcase economic forum in his hometown of St. Petersburg.

Speaking in response to a question from The Associated Press during a meeting with heads of international news agencies, Putin acknowledged the damage from Ukrainian drone attacks.

Chinese leader Xi Jinping will travel to North Korea next week, both countries announced Friday, in what will be his first visit in nearly seven years.

His trip will be the latest in a series of steps by China to reinforce its close ties with its nuclear-armed neighbor. North Korean leader Kim Jong Un has reached out to Russia in recent years, notably by sending troops and conventional weapons to support its war against Ukraine.