What did you think of the woman president?
It's obvious that during the original casting of the movie, the director thought that Hillary Clinton would have won going into the campaign. You could say it is the liberal bias in Hollywood, but I think that likely was the best case guess at the time based on common knowledge. Hollywood lives in California, so the bias towards optimism of left leaning candidates is understandable. EIther way, it makes sense in the plot of the movie. She definitely plays a believable female president that likely was assumed to be Hillary.
I think the story itself is highly implausible from a realist viewpoint. I don't think the US would ever dip into a coup d'etat against a nuclear power like Russia. So from that perspective it is unreasonable. However, if we look at non-nuclear powers, the US was involved in the assassination of Iran's Prime Minister in 1953. This in turn, directly influenced the rise of Ayatollah and his eventual takeover and extreme hostility to the US afterwards. If you look aside from these realities, then the story plays out like a fun crazy plot from Hollywood.
What did you think of the submarines?
What did you make of the two captains?
What did you think of the SEAL team?
Which parts of the movie would you change?
There are two parts that need work in my view. First, there is a young female NSA agent running as the representative in the US Department of Defense, this really doesn't make sense. She could be the go between for the DOD, but its primary representative? That's a bit of a stretch, but I think for the story it kind of works, since you don't want to have to develop that part of the story as well.
Another issue is simply the training of the submarine crew could have been better I think to be more believable. It just seemed like they rehearsed for 1-2 weeks. I think they should have trained for hours for a few weeks and then film as the scenes would seem much more natural. If you look at the Red October or say Red Dawn (84 version), you can see all the training that went into making the characters believable. Kind of weird too if you look at say 300 and Butler just slays in that role. The director just wasn't as driving I think in training the actors to be believable in the submarine roles.