A promise Trump is unlikely to keep
For a guy who has run one of the most incoherent campaigns in modern history, this promise looks like a stretch. He has a tendency to just throw something out there and then when people raise obvious objections he backtracks, such as his push for nuclear proliferation in East Asia. His is for leaving ISIL alone or letting the Russians fight them before he decides that maybe we should wipe them out. The incoherence could fill many pages.