By Olivia Le Poidevin and Emma Farge

GENEVA, March 17 (Reuters) - Medical supplies to clinics dealing with the humanitarian crisis in Sudan could run out within two weeks unless shipments are rapidly rerouted after disruptions due to the conflict in the Middle East, the charity Save the Children said.

The expanding U.S.-Israeli war on Iran has shaken global supply chains, with airspace closures and the halt of shipping ​through the Strait of Hormuz.

Some $600,000 worth of essential medicines are stuck in ports in Dubai, the charity said.

By Andrew Gray

BRUSSELS, March 17 (Reuters) - European Union foreign policy chief Kaja Kallas called on the United States and Israel on Tuesday to end their war with Iran and said the EU was consulting with governments in the Middle East about how to bring the conflict to a conclusion.

In an interview with Reuters in Brussels, Kallas also said the door was not closed to European participation in efforts to restore freedom of navigation in the Strait of Hormuz but it would be most likely to come as part of a diplomatic solution.

March 17 (Reuters) - Tensions between Pakistan and Afghanistan flared this week after the Afghan Taliban government accused its neighbour of attacking a drug rehabilitation centre and killing more than 400 people - a charge denied by Islamabad.

Amid fears of a sharp escalation in the conflict, here is a look at how the militaries of the allies-turned-foes compare, according to data from the London-based International Institute for Strategic Studies.

OVERVIEW

By Emma Farge

GENEVA, March 17 (Reuters) - Tens of millions more people will face acute hunger if the Iran war continues through to June, according to analysis from the World Food Programme released on Tuesday.

The U.S.-Israeli attacks on Iran that began on February 26 have choked up key humanitarian aid routes, delaying life-saving shipments to some of the world's worst crises.

An extra 45 million people could face acute hunger if the Middle East war rages on beyond June, swelling the number worldwide to a "terrible" high, the United Nations warned Tuesday.

The war, now in its third week, and its shockwaves on food and fuel costs could price families out of staple foods far beyond the region, the UN's World Food Programme said.

"The escalating humanitarian fallout from the conflict in the Middle East is growing more concerning by the day," warned WFP deputy executive director Carl Skau.

NEW DELHI, March 17 (Reuters) - India has had no discussions with Iran over the exchange of three vessels, a spokesperson for India's foreign ministry said on Tuesday.

Reuters reported on Monday, citing sources, that Iran had asked for the return of three seized tankers in exchange for India asking for India-flagged or India-bound vessels' safe passage through the Strait of Hormuz, a key artery for global crude trade.

(Reporting by Saurabh Sharma and Nidhi Verma, writing by Hritam Mukherjee)

BRUSSELS, March 17 (Reuters) - Kaja Kallas, the European Union High Representative for Foreign Affairs and Security Policy, told Reuters on Tuesday there is no appetite among the bloc's countries to return to business as usual with Russia as energy prices soar in the wake of the U.S.-Israeli war on Iran.

Kallas, who serves as the EU's top diplomat, also said that the EU has started taking into account the unpredictability of the United States under President Donald Trump, and pointed towards diplomacy over military means to keep the Strait of Hormuz open.

ATHENS, March 17 (Reuters) - Greece does not back any separate deals that would allow ships to enterand exitthe Strait of Hormuz but wants a durable solution to safeguard peace in the region, its Foreign Minister George Gerapetritis said on Tuesday.

"We do not think that it is optimal to have separate agreements, so that ships enter or leave the Strait of Hormuz," Gerapetritis told reporters alongside his German counterpart Johann Wadephul in Berlin.

When Israeli and US strikes killed Ayatollah Ali Khamenei at the start of the Middle East war, Iran's security chief Ali Larijani briefly became even more powerful than he had been for decades.

Last June's 12-day Israeli air assault boosted the long-time insider's profile. And in January he was deeply implicated in the Islamic republic's brutal crackdown on anti-government protests.

March 17 (Reuters) - Iran's Supreme Leader Ayatollah Mojtaba Khamenei has rejected proposals for reducing tensions or for a ceasefire with the United States that were conveyed to Tehran by two intermediary countries, a senior Iranian official said on Tuesday.

Khamenei's stance for revenge against the U.S. and Israel was “very tough and serious” in his first foreign policy session, the official said, without clarifying whether the leader attended the session in person.