Donald J. Trump is a man characterized by many descriptions using the prefix “un.”

He’s unpredictable, unconventional, unpresidential, unaware, uncontrollable, unbridled, unhinged (at times). There’s probably a lot more that I can’t think of at the moment. But you get the idea.

It remains to be seen just how this fellow is going to govern.

The president recently stuck a shiv in the back of his “fellow Republican” colleagues in Congress by agreeing to a deal offered by the dreaded Democratic opposition. It came from House Minority Leader Nancy Pelosi and Senate Minority Leader Chuck Schumer.

“Nancy and Chuck,” as Trump referred to them.

They tossed out a 90-day extension to keep the government running. It included some money for Hurricane Harvey relief. Trump took the deal and then plunged the Republican majority in both congressional chambers into near panic.

The extension and the debt ceiling increase now becomes an issue leading into the 2018 mid-term election, which is something the GOP did not want to occur.

Is this the art of the deal?

This isn’t how you cut the “best deal possible,” as Trump kept telling the nation while he campaigned for the presidency. But it’s the deal he struck. Jaws dropped all over Washington, D.C. Some chatter has wondered whether Trump is adopting former President Clinton’s strategy of “triangulation,” that positioned the president between diehards within both parties.

I don’t believe Trump knows enough about politics to employ such a brainy strategy. After all, both House Speaker Paul Ryan and Senate Majority Leader Mitch McConnell — two savvy Republicans — say the president is “new” to this political game.

Let’s add unseasoned to the list of descriptions, shall we?

It looks for all the world as though we’re headed into a brave new world blunderbuss politics as executed by the man who sits in the Oval Office.