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Now playing Next PuertoRico Scale of rebuilding Puerto Rico grows as teams discover extent of damage With rescue teams only just reaching many interior parts of Puerto Rico the island faces years of work to repair the damage done by Hurricane Maria. 25/09/2017
Now playing Next Afghanistan Car bomber hits NATO convoy in Kabul The suicide bombing wounded at least three civilians but left international forces unharmed, according to security officials. 24/09/2017
Now playing Next North Korea Trump, North Korea leaders trade increasingly threatening insults Trump, North Korea leaders trade increasingly threatening insults 24/09/2017
Now playing Next North Korea US bombers fly near North Korea, which threatens rocket strikes The flight was the farthest north of the demilitarised zone separating North and South Korea that any US fighter jet or bomber has flown in the 21st century, the Pentagon said. 23/09/2017
Now playing Next Mexico Mexico earthquake: Rescue efforts continue as death toll rises At least 273 people are now known to have been killed by Tuesday's 7.1 magnitude quake 22/09/2017
Now playing Next No Comment US conducts military exercises on Korean peninsula Live-fire drills conducted as part of two-day exercise amid tensions with North Korea. 21/09/2017
Now playing Next Next Series Sixty years since Sputnik - the satellite that changed the world Sixty years ago, Sputnik became the first satellite in space and changed the world forever. 21/09/2017
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Now playing Next USA Threats and diplomacy at the UN Trump threatens to destroy North Korea while Macron offers voice of calm at the UN 19/09/2017
Now playing Next USA Trump at UN: US may have to 'totally destroy North Korea' US president Donald Trump addressed the United Nations General Assembly during its general debate saying he may have to 'totally destroy North Korea' 19/09/2017
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Now playing Next Iraq Diplomatic pressure grows to stop Kurdish independence vote Diplomatic pressure and military threats - looming Iraqi Kurdish independence vote causes concerns in already unstable region 18/09/2017
Now playing Next USA Scientists complete eight-month Mars mission... on earth The HI-SEAS V mission, run by the University of Hawaii, produced data that should help NASA understand the psychological profile needed for crew members on future long-term missions to Mars. 18/09/2017
Now playing Next USA SpaceX Dragon arrives home from International Space Station The cargo capsule was released from the ISS on Sunday, heading back to Earth after a month in space. 17/09/2017
Now playing Next Romania Is Romania ready to deal with its rising migrant numbers? Migrants have been crossing the Black Sea to Romania in increasing numbers. 16/09/2017
Now playing Next World News Mission accomplished for Cassini as the probe crashes into Saturn 15/09/2017