President Donald Trump said he would speak to Russian President Vladimir Putin on Tuesday as he pushes to end the war in Ukraine.

The U.S. leader disclosed the upcoming conversation to reporters while flying from Florida to Washington on Air Force One on Sunday evening.

Fighting erupted overnight into Monday along the border with Lebanon, Syria's state media said.

This came after the Syrian interim government accused militants from Lebanon's Hezbollah of crossing into Syria on Saturday, kidnapping three soldiers and killing them on Lebanese soil.

U.S. President Donald Trump said he ordered a series of airstrikes on the Houthi-held areas in Yemen on Saturday, promising to use "overwhelming lethal force" until the Iran-backed rebels cease their attacks on shipping along a vital maritime corridor. The Houthis said at least 31 people were killed.

"Our brave Warfighters are right now carrying out aerial attacks on the terrorists' bases, leaders, and missile defenses to protect American shipping, air, and naval assets, and to restore Navigational Freedom," Trump said in a social media post. "No terrorist force will stop American commercial and naval vessels from freely sailing the Waterways of the World."

Ordnance from Syria's 13-year conflict exploded in the coastal city of Lattakia, collapsing a building and killing more than a dozen people, the Syrian Civil Defense said Sunday.

The paramedic group, known as the White Helmets, said it worked overnight, searching through debris and recovered 16 bodies, including five women and five children, and that 18 others were injured. The group and residents said the explosion occurred in a metal scrap storage space on the ground floor of the four-story building.

Iran on Sunday once again denied aiding Yemen's Houthi rebels after the United States launched a wave of airstrikes against them and President Donald Trump warned that Tehran would be held "fully accountable" for their actions.

The Houthi-run Health Ministry said the strikes killed at least 31 people, including women and children, and wounded over 100. The rebels said one strike hit two homes in northern Saada province, killing four children and a woman. The rebel-run Al-Masirah TV showed images of what it said were the bodies.

A senior Hezbollah official has hinted that the Lebanese group will not lay down its weapons as long as Israel is occupying parts of the country.

Sheikh Mohammed Daamoush made his comments in Beirut during a sermon for Friday prayers adding that Israel’s occupation of five strategic hilltops and the daily violations of a ceasefire aim to pressure Lebanon to normalize relations with Israel.

Russia and Ukraine traded heavy aerial blows overnight Saturday, with both sides reporting more than 100 enemy drones over their respective territories.

The attack comes less than 24 hours after Russian President Vladimir Putin met with U.S. envoy Steve Witkoff to discuss details of the American proposal for a 30-day ceasefire in the war with Ukraine,

The fall of Syrian President Bashar Assad's government has aggravated already tense relations between Turkey and Israel, with their conflicting interests in Syria pushing the relationship toward a possible collision course.

Turkey, which long backed groups opposed to Assad, has emerged as a key player in Syria and is advocating for a stable and united Syria, in which a central government maintains authority over the whole country.

Hamas said Saturday it would only release an American-Israeli and the bodies of four other hostages if Israel implements the existing ceasefire agreement in the Gaza Strip, calling it an "exceptional deal" aimed at getting the truce back on track.

A senior Hamas official said long-delayed talks over the ceasefire's second phase would need to begin the day of the release and last no longer than 50 days. Israel would also need to stop barring the entry of humanitarian aid and withdraw from a strategic corridor along Gaza's border with Egypt.

China has ordered banks and other financial institutions to encourage more consumer financing and use of credit cards as part of a campaign to get people to spend more.

The order Friday from the country's financial regulator is part of the ruling Communist Party's latest push to build more confidence among consumers who are opting to save rather than spend, worried over jobs and the outlook for the economy.