To address this topic: The reason North Korea can play in the World Cup is the same reason they can play in the Olympics. The World Cup is a time for all countries to peacefully come together and compete in a fun environment. Politics are always ignored as much as possible in these international sporting events.
To address the torture topic: I don't understand why there is so much talk about Gitmo here, Guantanamo Bay is currently under government oversight and therefore bascially no torture occurs there. Most important terrorists prisoners are usually held at black sights, most of which are in the forests and mountains of Germany and South America or in Northern Africa.
To address the Taliban topic: 90% of Americans, including Pure Skillzz, do not know what the Taliban is. The Taliban is not one terrorist organization, the world Taliban (طالبان

in Arabic means 'local government'. These "Talibans" are tribal groups that have taken over their communities to protect them because the government is hopeless in Afghanistan. They utilized Afghanistan's main export, Opium, and traded it for food and other necessities to save their communities. Now that their country has been invaded by the US and UN coalition forces, these Talibans have fought back to protect their communities, as they did in the 1980s against the Russians. Some have even allied and form bigger organizations as they are at war, but in no way shape or form are they involved in terrorist activities against U.S. soil. They may utilize terrorist and guerilla tactics in their homeland (RPGs, IEDs, AKs) as they serve as a village watchguard. But the Taliban does not conduct suicide bombings (in general) or other "terrifying" activities against the civilian population. Those activities are done by groups like Al-Qaeda who have radically misinterpreted the Qur'an and now kill Christians and Jews.
@Feren Silver
Funny note: It's been rumored that the fans at the North Korean games are actually people from China hired to play the part.
As far as I know, North Koreans are not allowed to leave their country, so unless this law has been reversed for the World Cup, you are probably correct.