Watch: What to expect from this year's UN General Assembly

World leaders have descended on New York for this year's UN General Assembly. The 81st High-Level Week brings together nearly 130 leaders under the theme, “Restoring trust, managing transformation: a United Nations that delivers for all.”

The BBC’s Sarah Smith outlines who US President Donald Trump is set to meet and the key topics expected to be on the agenda.

Inside Djibouti refugee camp for thousands fleeing Houthi advance in Yemen

Fighting on Yemen's west coast has prompted thousands of people to flee by boat across the Bab al-Mandab Strait.

Watch: Concertgoers and pro-Palestinian activists arrive at Ed Sheeran concert

Some Ed Sheeran fans say they are excited to enjoy music and are not there for politics after Macklemore was dropped from the tour for making pro-Palestinian comments.

Watch: Aztec codex on display in Mexico for first time in 186 years

Mexicans celebrate the return of a centuries-old document that tells the story of the Aztec civilisation and its fall after the arrival of Spanish conquistadors.

Watch: 'A better opportunity' - Canadians on a closer alliance with Europe

Toronto residents react to the possibility of a closer strategic, economic, and political alliance with the European Union.

Watch: Leaked photos reveal extensive damage at US bases in Gulf

The photos, provided by active military personnel, show a severed radar jet, flattened trailers and severely damaged buildings as a result of Iranian strikes.

Watch: What the munitions shortage means for the US

The BBC's Gary O'Donoghue looks at how Operation Epic Fury is impacting ammunitions, and what it could mean for US military readiness.

Warning of space arms race as US confirms weapons in Earth's orbit

The BBC's defence correspondent Jonathan Beale explains what an arms race in space might look like - and what it could mean for us on the ground.

Why did USS Lincoln turn up in Thailand looking so rusty?

When the USS Abraham Lincoln docked in Thailand this week some people were quick to criticise the condition it was in.

Watch: JD Vance 'extremely sceptical' over alleged strike on Iranian wedding

Iran has accused the US of a war crime after officials said a missile strike killed four people, including two children, at a wedding celebration.

Six months into the Iran war: What has Trump accomplished?

The BBC's Tom Bateman explores how successful the US has been in delivering on the promises made at the start of the war.

Watch: Algerians look on as deadly wildfires rage through night

At least 12 people have died in the fires and Algeria's president has announced three days of mourning.

Belugas and dolphins rescued from closed Canadian park arrive in Spain

Two beluga whales and four dolphins rescued from a struggling Canadian marine park arrived in Spain as part of an effort to relocate the animals and avoid euthanasia.

Why was this US military plane in Moscow?

The BBC's Tom Bateman explains how a senior US official flew into the Russian capital, though the motive is still unclear.

Tracking USS Lincoln's eight-month mission as concerns about conditions grow

BBC Verify has used satellite imagery to monitor the warship on one of the longest ever US deployments.

Watch: Why has Trump shifted on North Korea?

Trump said the US will "substantially reduce" joint military exercises with South Korea, citing his "very good relationship" with Kim Jong Un.

‘Justified’ or ’no business being there’? Tennessee munitions town loyal to Trump but divided on Iran

Hear from voters in Kingsport, home to a munitions plant supplying the US military, as tensions over the Iran war spark debate.

Watch: Why was Trump smuggled out of Air Force One in a catering truck?

US media reports say the president secretly left via a catering truck to avoid a threat to his life from Iran.

Watch: Huge blaze after attack on petrol tank in Libya

Firefighters are trying to contain a blaze at a large petrol tank west of the capital, Tripoli, which was targeted by unknown attackers.

Watch: Pentagon releases fresh UFO videos in new document dump

The fifth batch of files released on 7 August include 41 documents, images and videos related to Unidentified Anomalous Phenomena (UAP).

Watch: Tens of thousands of migrants enter Spain's Ceuta from Morocco

Most migrants who reached Spain's North African territory of Ceuta from Morocco have returned, officials said.