Just realize any kind of promise like that with a date so close, if real at all, has had to have been in place for a least 10 yrs., if not more.
If 2020 is really feasible, then Newt is aware of whatever has already been in place to make it happen by that date. And if so, it also means that no matter who is pres., it will happen.
Dawkins thinks belief in God is an excuse to evade thinking in the scientific world. Sadly, he is ignorant to the list of christian scientists who have contributed & founded many of the sciences he himself believes in. How ironic.