Will pakistan join up with north Korea to attack America I know they're allies and both have nuclear and chemical weapons?

Answer 1

Probably not.

Pakistan is not technically allies with North Korea. They have formal relations, including embassies, and have done some trading (including, notably, that Pakistan has been accused of helping North Korea develop nuclear weapons). Relations between the US and Pakistan have been strained since the 1990's, especially lately due to events relating to the War on Terror.

However, the US and Pakistan are still allies and have been since Pakistan was formed. Additionally, Pakistan has too many problems to deal with at home. A large chunk of rural Pakistan is ruled by terrorist groups like Al Qaeda and the Taleban; also, Pakistan has a long history of fighting with their neighbors, especially India but also Afghanistan. Attacking the US would be foolish.

However, if somehow there was a coup d'etat, and some radical religious group were able to take control, it's theoretically possible for a Pakistani attack on the US. Barring that, it's highly unlikely. Pakistan is far more likely to attack their old enemy India than the US.

As for North Korea, for all their bluster, they don't really have any way of attacking the US directly. They do have a large and powerful military, including WMD's, but they don't really have a way of getting it to the US. They don't have much of a navy besides submarines, and their air force isn't as powerful as the US's massive air forces. They do have short ranged nuclear missiles that could strike US allies like Japan and South Korea. They also are said to have high quality special forces units, which could be dropped into the US by submarine to commit sabotage. But a large scale military invasion is not really possible.