JERUSALEM/BEIRUT, April 10 (Reuters) - Israeli and Lebanese officials are expected to meet in Washington next week as U.S. President Donald Trump seeks to calm weeks of Israeli fighting with Iran-backed Hezbollah that has threatened to derail a fragile U.S.-Iran ceasefire.

Both sides are under pressure from Trump to bring about an end to the fighting, a key demand by Iran in parallel talks due this weekend in Pakistan.

WHO IS FIGHTING, AND WHY?

Iran and the United States were scheduled to hold peace talks in Pakistan on Saturday with the foes appearing to be far apart on key demands and expressing mutual mistrust.

The Iranian delegation, with more than 70 members and headed by parliamentary speaker Mohammad Bagher Ghalibaf, arrived first in Islamabad, where security was tight.

"We have good intentions but we do not trust," Iranian state TV quoted Ghalibaf as saying upon his arrival in Pakistan's capital. "Our experience in negotiating with the Americans has always been met with failure and broken promises."

NEW DELHI, April 10 (Reuters) - India is "deeply concerned" by reports of civilian casualties in Lebanon, the Indian foreign ministry said on Friday, two days after Israel's worst bombardment in its war with Lebanon killed more than 300 people.

Israel invaded Lebanon last month in pursuit of Hezbollah after the group fired into Israel in support of Iran, as the U.S.-Israel war on Iran raged.

Inside an underground shelter at a hospital in the Israeli city of Haifa, a television screen flickers with images of Iranian missiles as doctors and midwives deliver Sarah Bird's third child.

"She's beautiful," a midwife says, placing the newborn in her mother's arms for a first kiss.

"She is!" exclaims Bird, 38, breaking into a broad smile.

Her husband Yitzhak, tense throughout, finally exhales, then explains that the couple will wait a week before choosing a name.

LONDON, April 10 (Reuters) - British Prime Minister Keir Starmer said on Friday that he discussed military capabilities and the logistics of moving vessels though the Strait of Hormuz when he spoke to U.S. President Donald Trump a day earlier.

"We've been pulling together a coalition of countries ... working on a political, diplomatic plan, but also looking at military capabilities and ... the logistics of actually moving vessels through the Strait," Starmer said during his visit to the Gulf.

Lebanon's presidency said Friday that a meeting would be held with Israel in Washington next week to discuss a ceasefire in the Israel-Hezbollah war and the start of negotiations between the neighbours.

Lebanese President Joseph Aoun has repeatedly expressed readiness for direct talks with Israel since Hezbollah drew Lebanon into the Middle East war on March 2 with rocket fire at Israel in support of its backer Iran, sparking massive Israeli strikes and a ground invasion.

The latest developments in the Middle East war:

- Vance says talks failed to reach agreement -

US Vice President JD Vance said Sunday that 21 hours of talks with Iran failed to reach an agreement, saying he was leaving after putting forward a "final and best offer".

"The simple fact is that we need to see an affirmative commitment that they will not seek a nuclear weapon and will not seek the tools that would enable them to quickly achieve a nuclear weapon," he told reporters in Islamabad, on the main sticking point for talks moving ahead.

By Olivia Le Poidevin

GENEVA, April 10 (Reuters) - Lebanon is facing a food security crisis as the Iran war disrupts supplies of goods inside the country, the United Nations World Food Programme said on Friday.

A fragile two-week ceasefire between the U.S. and Iran showed further strain on Friday, a day before they are expected ​to negotiate in Pakistan, as Washington accused Tehran of breaching promises on the Strait of Hormuz and Israel struck Lebanon with attacks that Iran has ‌claimed violate the truce.

Pakistan is set to host talks between Iran and the United States in a bid to turn a fragile two-week ceasefire into a lasting end to a war that has left thousands dead and roiled global energy markets.

Here are five things to know about the Islamabad talks:

- The war behind the talks -

On February 28, the United States and Israel launched deadly coordinated strikes that killed supreme leader Ali Khamenei and struck Iran's military and nuclear infrastructure.

By Yimou Lee and Ben Blanchard

TAIPEI, April 10 (Reuters) - Taiwanese officials are tracking what they view as a worrying rise in Chinese naval activity and military pressure against the island, even as Beijing presses a message of peace and cooperation in meetings with Taiwan's opposition leader.