(Global Edition) From the BBC World Service… President Trump today will decide the future of America’s participation in the Iran nuclear deal. Ahead of any announcement, Iran’s president has this morning vowed to continue the country’s domestic development in the face of any possible new sanctions from the US. So if the US exits the pact, how will Iran respond? Then, exporting charcoal from Somalia has been banned since 2012, but the illegal trade and use of the product has led to ongoing environmental destruction in the region and exacerbated a humanitarian crisis. We’ll talk to a UN representative taking part in meetings this week in Mogadishu to try and stop the illegal practice and money flowing through militant groups. Afterwards, a new study says global tourism accounts for 8% of carbon emissions – three times higher than previous estimates. So, how can you be a more economically-sensitive traveller?