As we've noted before, it appears that President Obama has concluded the Arabs are such a mess they should be dominated by Iran's Persians as has happened in the dim past. This policy is one of two things: extreme wisdom or extreme foolishness.
There is abundant evidence the Arabs are a mess - economically irrational tribal people with much more factionalism than is good for them. And there is evidence the Persians are at least somewhat better organized if also theologically out of touch with reality.
If Obama's policy works, history will view it as the crown jewel of his presidency. If it turns out to be the precursor of a region-wide genocidal bloodbath, obloquy will shroud his legacy like a foul miasma. If the resulting Persian Empire 2.0 becomes a world power implacably opposed to U.S. interests, his memory likewise will suffer.
I'm not qualified to make a prediction about the policy's future. I do believe it is a high-risk ploy, with a less than 50/50 chance of success.