In the UkUK it is clear-cut.: A person can be held for up to 24 hours before being charged or released.
There is no need to search through case law or find comparable circumstances for a specific case. It's one law for everyone.
By contrast Israel tends to have very different laws for different people. Take 2 people in identical circumstances but 1 is Palestinian. The Palestinian would be under military law but his friend being a Christian, Atheist or Jew probably wouldn't even be cautioned let alone arrested - but if they were arrested then it would be under normal civilian law.
Israel has often sent soldiers to arrest children in the middle of the night in their own homes and without warrant or any reasonable suspicion. Such children have then been held for indefinite periods, often years, without any charges or reason being given.
So it is interesting that the USA doesn't have a fixed time-frame for all cases and just has to argue and discuss each case individually.
Regards from a Tom :)