the international rules
its traveling
rules on international disputes
rules on international disputes
rules on international disputes
It is very unlikely that there will be a single set of international rules anytime soon because the governments and people wouldn't allow it. Most countries want to have their own set of rules, so won't agree to international rules.
There aren't any NHL rules during the Olympics. The refs use International Hockey rules
there's a whole ton of rules set up by usa swimming and also international rules
None - The rules are enforced by the IRB - The International Rugby Board.
nothing
Well, not knowing where you reside at, the 1972 COLREGS / International Rules of the Road is certainly a good place to start. I won't assume you live in the US, but if you do the US Coast Guard produces the International / Inland Rules of the Road book.
Rules for individual sports are made by the governing body of that sport. The rules may be adapted for the Olympic format by the Olympic committee. Rules directly relevant to the Olympics are also decided by the IOC, the International Olympic Committee.