True, but Obammy wanted an update just last year. They also promised no boots on the ground. Why would you do that when you knew by these very plans that there would have to be.
Because securing the Chem weapons was an objective proposed by 0. The 75000 troops are part of the course of action (COA) that would make that happen. If troops are a no-go because 0 blinks due to the political pressure or the presence of the Russians, the proposed objective would be considered unachievable and rejected for that reason.