There may be a more sinister reason for sending more troops to Saudi Arabia. 9/11 happened in part because numerous Saudi's felt the US base we had in Saudi Arabia at the time was blasphemy and this helped Bin Laden get his recruits and money to fund the attack. That base was left over after the first gulf war. Right after 9/11 Bush quietly closed down that base.
Trump made a speech early in his president about how 9/11 united the nation so much and that maybe this nation needed another 9/11.
Trump blessed Netanyahu's expansion of settlements in Palestinian land. This did not lead to another attack but certainly could have.
Trump moved our embassy to Jerusalem. This did not lead to another attack but certainly could have.
The Muslim ban certainly could have led to another attack.
So now putting troops in Saudi Arabia. Maybe that will get him the attack he wants to get his poll numbers up.
Let's face it, this man really is this sick.