As agreed with the Bush administration, the US will continue its withdrawal, unless invited by the Iraqi government to keep some training troops present. There is no reason for the US to go back on the agreement. Since the entry and the withdrawal were planned before the current administration, one has to conclude that the results were intended despite any denials to the contrary.
ISIS claims responsibility for bombing in Baghdad suburb; death toll hits 21 (Reuters)
from the article: Iraq is caught between Iran and the Arab world