تعریف و معنای "do or die"

What is the origin of the idiom "do or die" and when to use it?

The idiom "do or die" likely originated from military contexts, particularly in times of war or high-stakes missions, where soldiers faced life-or-death situations and had to make choices with no room for hesitation. It is used to emphasize the high stakes involved and the commitment to achieving a goal under extreme pressure.