The phrase to see no other choice is used in contexts I don't quite understand. Some snippets from Google Search:
... forces are ever engaged in high-intensity urban warfare, it is almost certainly going to be because the political and military leadership see no other choice
People kill themselves because they see no other choice
While many in the hard to the ultra-right as well as the moderate right, vote Republican, it is because they see no other choice.
Literally speaking, there is always another choice. So clearly, the meaning is not literal. What does to see no other choice mean, really?