Romania and Chad have the same flag.

Of the infinite number of possible flags, how do two countries end up with the same flag?

Romania's flag:

Chad's flag:

There was some flag flap back in 2004 at the UN between these two nations.  Apparently the blue on Chad's flag is slightly darker.  Whew!  Close call!  The two countries were about to go to war over it. If two countries have an identical flag, they should flip a coin.  One keeps their flag, the other goes back to the drawing board.  That or the presidents of each nation arm wrestle for it.