May 1 (Reuters) - China's U.N. ambassador Fu Cong said on Friday it was an urgent necessity to maintain the Iran war ceasefire and that he was sure the Strait of Hormuz issue would be high on the agenda if it is still closed when U.S. President Donald Trump goes to China this month.

Fu told reporters at the United Nations the strait needed to be reopened as quickly as possible. He said China was very concerned about remarks it had heard recently about the ceasefire being temporary and the need to initiate another round of attacks.

By Patricia Zengerle and Bo Erickson

WASHINGTON, May 1 (Reuters) - U.S. President Donald Trump's administration argued that a ceasefire with Tehran had "terminated" hostilities as a legal deadline arrived on Friday for coming to Congress about the two-month Iran war.

Under the 1973 War Powers Resolution, the president can wage military action for only 60 days before ending it, asking Congress for authorization or seeking a 30-day extension due to "unavoidable military necessity regarding the safety of United States Armed Forces" while withdrawing forces.

May 1 (Reuters) - Iranian soccer federation president Mehdi Taj said Canadian officials cleared him to enter the country for the FIFA Congress, but Iran’s delegation chose to turn back after being held for three hours and questioned at a Toronto airport, Iranian media reported on Friday.

Taj, a former member of Iran's Islamic Revolutionary Guard Corps (IRGC), said he was questioned by Canadian immigration about his ties to the group, but was ultimately allowed into the country for the pre-World Cup gathering in Vancouver.

Lebanon's health ministry said 13 people were killed on Friday in Israeli strikes in the south, including in a town where Israel's army had issued an evacuation order despite a ceasefire.

The strikes in Habboush killed eight people, including a child and two women, and wounded 21 others, the ministry said, raising an earlier toll.

Other strikes in Zrariyeh killed four people, two of them women, and wounded four more, it said.

The ministry also reported a strike in Ain Baal near the coastal city of Tyre killed one person and wounded seven others.

Throwing more than $5 billion at a divisive new tour and walking away after five seasons does not look like good business, but LIV Golf wasn't all bad news for Saudi Arabia.

Oil-funded LIV, which poached top stars and sent golf's establishment into a tailspin, helped push the conservative kingdom into global view -- one of its key aims, experts say.

They said the exit, confirmed on Thursday after weeks of speculation, does not signal a flight of Saudi money from sport, even after the Middle East war that sparked Iranian attacks around the Gulf.

By Timothy Gardner

WASHINGTON, May 1 (Reuters) - Any shippers paying tolls to Iran for passage through the Strait of Hormuz, including charitable donations to organizations such as the Iranian Red Crescent Society, are at risk of punitive sanctions, the U.S. Treasury warned on Friday.

The Strait of Hormuz is one of the world’s most strategically vital maritime routes, with about 20% of the world’s seaborne ​crude oil ​and liquefied ⁠natural gas flows passing through it.

Whenever Fatima al-Safadi hears a knock at the door, she imagines it might be her sons -- among dozens of people Israel has seized from southern Syria and whose fate remains unknown months later.

Mohammed, 40, and Ahmed, 36, were among seven people seized in a nighttime Israeli army incursion into the village of Beit Jinn, southwest of Damascus, in June last year.

By Alexander Cornwell

TEL AVIV, May 1 (Reuters) - A U.S. military-run centre near Gaza that critics say failed in its mission to monitor the Israel-Hamas ceasefire and boost aid flows to besieged Palestinians is set to be shut by the Trump administration, sources familiar with the matter told Reuters.

The closing of the Civil-Military Coordination Centre (CMCC) in Israel would mark the latest blow to President Donald Trump's Gaza plan, already undermined by repeated Israeli attacks since the October truce and a refusal by Hamas to lay down its arms.

The UN refugee agency on Friday said the Middle East war had sent its freight rates soaring, hitting the delivery of aid to refugees in the wider region and Africa.

Shipping rates from UNHCR's three main source countries for emergency supplies -- India, Pakistan and China -- have shot up by nearly 18 percent, the agency said, while delivery delays and port congestion are also having an impact.

Every extra dollar spent on fuel and higher war-risk shipping insurance premiums is a dollar less that can be spent in the field, UNHCR added.

US President Donald Trump said Friday he was "not satisfied" with a new Iranian negotiating proposal, as peace talks remain frozen despite a weeks-long ceasefire.

Iran delivered the draft to mediator Pakistan on Thursday evening, the IRNA news agency reported, without detailing its contents.

"At this moment I'm not satisfied with what they're offering," Trump told reporters, blaming stalled talks on "tremendous discord" within Iran's leadership.