COLU @ CONCEPTS

Image copyright REUTERS Image caption Thousands were tortured and brutally killed in Chile in the Pinochet years Police in southern Chile have arrested a former secret service agent sentenced to jail for human rights abuses during the military government led by General Augusto Pinochet. Reimer Kohlitz was detained during an anti-drugs operation near the border with Argentina. He had been on the run since being convicted two years ago of the murders of two left-wing activists in 1984. Some 3,000 dissidents were killed during Gen Pinochet's rule. Many others were tortured by Chile's notorious secret police under his rule in the 1970s and 80s. 'Killed in confrontation' Kohlitz was detained near the village of Curarrehue, some 800km (500 miles) south of the capital, Santiago. Anti-drugs police were carrying out an operation in the area, in Araucanía province, after being tipped off that a load of narcotics was about to come through the Argentine border. ...

Image copyright GETTY IMAGES Image caption Representatives of US coal companies are due to present at this year's climate talks Plans by the Trump administration to promote coal as a solution to climate change at a major UN meeting have angered environmentalists. An adviser to the president is expected to take part in a pro-coal presentation in Bonn next week. Separately, a group of governors will say that the US is still committed to climate action despite Mr Trump's rejection of the Paris agreement. The talks begin on Monday and aim to flesh out the rules for the Paris pact This meeting, officially known as  COP23,  will be the first full gathering of climate negotiators since President Trump vowed to take the US out of the Paris treaty. "The bottom line is that the Paris Accord is very unfair, at the highest level, to the United States," he said last June, announcing the US intention to withdraw. US quits Paris climate pact Five effects of US pullout...

Image copyright GETTY IMAGES US President Donald Trump is on his first official trip to Asia, passing through Japan, South Korea, China, Vietnam and the Philippines. From trade to etiquette, each stop will have its own challenges. So here is a (non-exhaustive) beginner's guide to the issues at stake. The journey begins in the shadow of North Korea Mr Trump starts off by visiting Washington's closest Asian friends: Japan and South Korea. But it's North Korea they will be talking about. Pyongyang has already sent two long range missiles over Japan and conducted its sixth and biggest nuclear test. Despite harsher sanctions, North Korean leader Kim Jong-un has shown no sign of slowing down the pace of weapons development. Skittish observers wonder if the visit will prompt Pyongyang to do something rash. But if talks with almost every leader are about how to deal with North Korea, there is unlikely to be any real consensus. Here are some key questions from this leg of t...

Media caption President Donald Trump addresses US troops at the Yokota air base in Japan US President Donald Trump said no nation should underestimate American resolve, as he arrived in Japan at the start of a marathon Asian tour. Addressing US troops at Yokota air base near Tokyo, he pledged to ensure the military had the resources needed to keep peace and defend freedom. Mr Trump's visit comes amid heightened tensions with North Korea over its nuclear programme and missile tests. It will be the longest tour of Asia by a US president in 25 years. "No-one, no dictator, no regime... should underestimate American resolve," President Trump told cheering US and Japanese troops shortly after his arrival in Japan. Image copyright AFP Image caption Mr Trump swapped his suit jacket for a bomber jacket Before touching down, he told reporters on board Air Force One that he expected to meet Russian President Vladimir Putin during his trip. "I...