:00:00. > :00:30.and why this song is breaking more records.
:00:31. > :00:32.First to the big argument between the United States
:00:33. > :00:36.of America and North Korea, a country in the east of Asia.
:00:37. > :00:54.And, to careers, warships, missiles and threats. What is going on and is
:00:55. > :00:58.it as scary as it sounds? Let's start with the two careers. One
:00:59. > :01:04.country is called North Korea and the other, South Korea. They were
:01:05. > :01:07.split into Mac after World War II fought a war with each other shortly
:01:08. > :01:14.after that and haven't gotten along since. And now the two men? One is
:01:15. > :01:19.the leader of North career. He is Kim Jong Un and he runs the country
:01:20. > :01:26.just like his dad and grandad before him. The other is Donald Trump.
:01:27. > :01:30.President of the US app. A country which has supported South Korea for
:01:31. > :01:35.along time. North Korea is a country that has cut itself off from the
:01:36. > :01:41.rest of the world. Lots of things are run in secret there and Kim has
:01:42. > :01:46.huge control over people's lives. He has also been trying to build
:01:47. > :01:51.nuclear missiles, powerful bombs that can cause devastating damage,
:01:52. > :01:53.that one day might be able to hit the USA. President Trump wants to
:01:54. > :02:01.stop this happening and he's given a warning. North Korea is best not
:02:02. > :02:07.make any more threats to the United States. They will be met with fire
:02:08. > :02:13.and fury like the world has never seen. In return, North Korea has
:02:14. > :02:18.threatened US military bases in the area. So all of this is pretty
:02:19. > :02:23.worrying too many people around the world. But there have been many
:02:24. > :02:29.arguments between the USA and North Korea in the past. And although
:02:30. > :02:33.they've never been friends, things have been worked out to stop a war.
:02:34. > :02:35.Everyone is hoping that will be the case this time as well.
:02:36. > :02:37.If you've been watching the World Athletics Championships,
:02:38. > :02:40.you'll have heard of this guy - Botswana's Isaac Makwala.
:02:41. > :02:44.Two days ago, he was one of a number of athletes
:02:45. > :02:46.affected by a stomach bug, and was stopped from
:02:47. > :02:49.competing in the 400 metres, for medical reasons.
:02:50. > :02:53.He's now been given the chance to run the 200 metres on his own.
:02:54. > :02:55.Roared on by the crowd, he qualified, booking
:02:56. > :03:02.I wish to thank the IAAF for giving me another chance.
:03:03. > :03:12.I just want to thank this crowd - it's so amazing.
:03:13. > :03:15.And Mo Farah will be going for gold again on Saturday,
:03:16. > :03:18.after he qualified for the final of the 5,000 metres last night.
:03:19. > :03:20.He'll be joined by fellow Brit Andy Butchart,
:03:21. > :03:25.after he qualified as a fastest loser from the second heat.
:03:26. > :03:27.Mo says he's worked hard for what he's achieved,
:03:28. > :03:35.and encourages people to do the same.
:03:36. > :03:40.You can't dream of something unless you do something about it. And I've
:03:41. > :03:45.been given a chance in life and I work for hard for it and I achieve
:03:46. > :03:47.what I have to do from hard work and keep grafting. To all the
:03:48. > :03:48.youngsters, you can be like me. Stargazers around the world
:03:49. > :03:50.are getting ready to enjoy the best bits of the spectacular
:03:51. > :03:52.Perseid Meteor Shower. It's when hundreds of meteors streak
:03:53. > :03:55.across the sky in a beautiful Perseids are actually tiny pieces
:03:56. > :04:01.of the Swift-Tuttle comet, seen every year when the Earth
:04:02. > :04:04.passes through a cloud Big news for Minecraft fans
:04:05. > :04:10.now, as the yearly conference, It'll now be a free and interactive,
:04:11. > :04:16.live streamed show, called The Minecraft team hope this
:04:17. > :04:23.will mean more people can take part. They're still encouraging fans
:04:24. > :04:25.to dress up, and submit their Minecraft-themed
:04:26. > :04:34.costumes online. It's one of the catchiest tunes
:04:35. > :04:41.of the Summer - Despasito. Well it's now the most watched video
:04:42. > :04:44.on YouTube of all time. It's been viewed more
:04:45. > :04:47.than 3 billion times. Despasito means
:04:48. > :04:52."slowly" in Spanish... But this video has got loads
:04:53. > :04:55.of clicks pretty quickly. That's all from me - Newsround's
:04:56. > :05:01.back right here at 8:15am.