U.S. President Donald Trump may visit Saudi Arabia as soon as next month, he told reporters at the White House on Monday, in what could be his first overseas trip since his return to power.

"It could be next month, maybe a little bit later. And we're going to Qatar, also, and also we're going to possibly a couple of other countries. UAE is very important ... so we'll probably stop at UAE and Qatar," the Republican said.

China is ready to play a "constructive role" in ending the war in Ukraine but backs Russia in defending its "interests", top diplomat Wang Yi told Russian state news agency Ria Novosti in an interview published on Tuesday.

In the war-devastated southern Lebanese village of Aitaroun, residents marked the Muslim holiday of Eid al-Fitr among their dead.

Relatives crowded the village's cemeteries to pray for the more than 100 residents, including fighters from Hezbollah, killed during the war between the militant group and Israel that ended with a fragile ceasefire in November.

Prime Minister Nawaf Salam said an Israeli strike early Tuesday on Beirut's southern suburbs was a "clear breach" of a ceasefire that largely ended more than a year of hostilities between Israel and Hezbollah.

In a statement issued by his office, Salam condemned the strike as "a clear breach of the arrangements of the cessation of hostilities" and a "flagrant violation of United Nations Resolution 1701," a Security Council decision that ended a 2006 war between Israel and Hezbollah and served as the foundation of the November truce.

President Joseph Aoun condemned an Israeli strike early Tuesday on Beirut's southern suburbs, calling on international allies to support the country's right to full territorial sovereignty.

"Israel's persistence in its aggression requires more effort from us in addressing Lebanon's friends around the world and rallying them in support of our right to full sovereignty over our land," Aoun said in a statement released by the presidency.

A source close to Hezbollah said an Israeli strike overnight Tuesday on Beirut's southern suburbs targeted an official overseeing Palestinian affairs in the Iran-backed Lebanese group.

The strike "targeted Hassan Bdair, Hezbollah's deputy head for the Palestinian file" who was "at home with his family" at the time, the source told AFP, requesting anonymity as they were not authorized to brief the media.

An Israeli strike on Beirut's southern suburbs, known as Dahieh, killed at least three people overnight Tuesday, Lebanese authorities said, after Israel announced its second strike on the country's capital in a fragile four-month truce.

The attack that came without warning at around 3:30 am (0030 GMT) during the Eid al-Fitr Muslim holiday. It came after Israel struck Beirut's southern suburbs, a bastion of Hezbollah support, on Friday after issuing an evacuation warning.

Lebanese authorities said several suspects have been arrested after rockets were fired at Israel earlier this month, testing a fragile November ceasefire.

Lebanon's General Security agency said it had "arrested a number of suspects, and the relevant authorities have begun investigations with them to determine responsibility and take the appropriate legal measures."

French President Emmanuel Macron has called on Israeli Prime Minister Benjamin Netanyahu, in a phone call, to "strictly respect the ceasefire" in Lebanon, a former French protectorate where Israel on Friday bombed the southern Beirut stronghold of Hezbollah for the first time after four months of truce.

The Beirut strike came after rockets were fired from Lebanon towards Israel on Friday, testing the fragile truce.

Donald Trump on Sunday repeated his suggestion he might seek a third term as president, which would defy the two-term limit stipulated in the U.S. Constitution.