The movie has so much potential in the first 10 minutes but then it falls apart. While Nolan is trying to decide if the movie wants to be Saving Private Ryan or another Memento, he forgets to build any characters or narrative that anyone can care about.

What a shame given the cast he had at his hand. He was just unable to direct them or bring together anything redeeming or with any level of depth.

Aside from the first 10 minutes, there are some beautiful cinematography. However, the scenes are shot on different days. One sunny and the other overcast. So the beautiful visuals are unable to sustain any type of mood across the length of the movie.

At the end, it's clear the story was too ambitious for Nolan and he was just unable to put it together.