[TangoTrotFox]

The real answer is quite straight forward. In the end international and governmental actions come down to clout, which in turn comes down to power. The governments with the most power will always do whatever they want to do, and impose their desires on other governments.

The crackdown on online poker was a striking example of this. To give cliff notes the US, heavily influenced by casino lobbyists, decided to ban online poker. Online poker sites were operating in foreign countries obeying all laws domestically applied to them. In spite of the fact that sites were operating within all laws that domestically applied to them, the US decided to act because they refused to overtly ban US players. In an extremely rapid action the US simultaneously confiscated the domains of these sites, and executed arrest warrants on many of the involved individuals including surreptitious raids and extraditions from places including South/Central America, and froze numerous bank accounts around the world including in places such as Ireland.

The US is powerful enough that its own desire is sufficient authority to enact any action. Guantanamo Bay is a great example. This is not a just a US property under US law. It is operated as a US territory but mostly independent of US legal authority. The Geneva Convention is disregarded as convenient. For instance the three prisoners that were reported as having committed suicide (which would result in condemnation in Islamic belief) were allegedly tortured to death at a secret facility in Guantanamo, known as 'Camp No' (as in, no it does not exist), detached from the main camp. [1]

[1] - https://en.wikipedia.org/wiki/Camp_No