The outgoing President is using executive (alias prerogative) powers to try to stop many of the main changes Mr Trump wants to make to US policy. He has excelled himself with his intervention with Russia at the very moment Russia brokers a ceasefire in Syria without the US being involved. If he wanted to stand up to Russia he could have chosen a more appropriate time and Russian action to oppose. He is also out to stop cheaper energy and the development of the US industry.
Imagine the outrage of the establishment if it had been an outgoing President Trump using executive powers in this way. It looks like the swan song of a President who messed up his policy in the Middle East and was outwitted by Russia most of the time. After years dithering Mr Obama at last knows what he wants to do -thwart his successor.