Dotard likes to call himself a fighter, who hits back when he's attacked, BUT,

he's had no response to Robert De Niro, who knows the Liar in Chief well, from their days in NYC and hates the Orange Clown, AND makes no secret of it, saying he'd 'love to punch him in the face'.
Like attacks from Putin, the Liar in Chief just ignores it.

De Niro also called Trump "a con, a bulls—t artist" and a "punk." But not a peep from Trump in response.

De Niro has continued with his personal and public slams of Trump right through today. For example, in an April 2017 television interview, De Niro said, "This guy has sullied the presidency. He's debased the presidency." In August 2017, De Niro made headlineswhen he called Trump "a flat-out blatant racist" adding, "if he [Trump] was smart, he'd be even more dangerous."

 At the National Board of Review awards,  De Niro served up a profanity laced takedown of Trump, dubbing him the "jerk-off in chief," and adding, "This f‑‑‑ing idiot is the President. It's 'The Emperor's New Clothes.' The guy is a f‑‑‑ing fool."

Again, no response from Dotard.

As per Trump University,  "Trump treats education as a con, a way to make a profit at the expense of the suckers."

Bottom line, I'd LOVE to be around if/when these two meet, and De Niro takes him down, one way or another. We can only hope....