U.S. President Donald Trump refused to row back on his feud with White House aide Kellyanne Conway¡¯s spouse on Wednesday, calling George Conway a ¡°husband from hell¡± and prompting Conway to renew his accusation that Trump was mentally unfit for his office.

¡°The president seems determined to prove the point I¡¯ve been making,¡± Conway told Reuters in response to the president¡¯s latest Twitter broadside.

Of all the brawls Trump has waded into, his back-and-forth with Conway, a lawyer who specializes in litigation, has been one of the more eyebrow-raising in Washington.