We assess President Trump's promises on his first day back in office and what it means for the rest of the world. Also: who will govern Gaza after ceasefire and first study into how weight loss drugs affect the body.

Donald Trump returns as 47th US president.

Donald Trump has repeated his desire to control Greenland as a matter of national security, targeting Russian and Chinese interest in the Arctic. Competition is heating up over shipping routes and stores of natural resources.

The Global Story brings you one big story every weekday, making sense of the news with our experts around the world. Insights you can trust, from the BBC World Service. For more, go to bbcworldservice.com/globalstory or search for The Global Story wherever you got this podcast.

US president commutes around 1,500 sentences and pardons 39 people. Also: inside Syria's abandoned presidential palace, recreational use of cannabis banned in Japan, and the secret to being happy at work.

Syrian President's grip on power wanes as another strategic city falls to Islamist rebels. Also: Notre Dame Cathedral in Paris is rededicated in front of world leaders and the conman in India who duped families into thinking he was their long lost son.

Syria's army says it's bolstering defences around the capital, Damascus, as rebels intent on overthrowing President Assad converge on the city.

MSF pulls out of Haiti's capital Port-au-Prince after attacks on staff. Also: US approves supply of antipersonnel land mines to Ukraine, why olive oil prices are plummeting and tennis bids adios to Rafael Nadal.

Republicans secure total control of US congress after winning the House of Representatives. Also: climate impact of jet condensation trails and the kidults rediscovering the joy of toys.

Donald Trump pledges to lead the US into a new golden age after winning US presidential election. We'll have world reaction and assess the potential impact on the global economy and environment.

Donald Trump poised to make historic comeback not seen in the US in more than a century.

Charlotte and Dave met as strangers in a moment of crisis, and went on to marry. Also, the son who reunited with his father after 19 years, and the friends that have been meeting up every week in the same spot since 1968 Presenter: Jannat Jalil. Music composed by Iona Hampson.

Former commander in rebel Lord's Resistance Army, Thomas Kwoyelo, sentenced to 40 years for war crimes in Uganda. Also: The tortured monkey released back into the wild, and a scientific breakthrough in eco production.