Maybe that wasn't an endorsement, but Putin and Trump have an uncanny way of echoing each other's words.
The subject that most seemed to provoke Putin was Aleppo, where Russian and Syrian bombing of hospitals, apartment buildings and a United Nations relief convoy has been widely condemned as a war crime. "We keep hearing Aleppo, Aleppo, Aleppo," whined Putin. Yet the attack on the Syrian city, he contended, was not different from the US-backed assault on Mosul, the Iraqi city held by Isis (Islamic State). "If it is better not to go in" to Aleppo, he contended, "then the offensive against Mosul shouldn't go ahead either."
Here, for the record, are some differences: While Mosul is controlled by Islamist extremists who enslave non-Sunni women and behead dissenters, the rebel forces in Aleppo include Western-backed secular groups who seek only to overturn the blood-drenched Assad regime. US and allied planes are not deliberately targeting Mosul's hospitals or international aid groups.
And while the Mosul campaign has broad international support, only Russia, the Assad regime and Iran support the Aleppo attack.
Most people living in open societies are informed enough to perceive the cynicism and mendacity in Putin's comparisons.
But Russia's increasingly sophisticated internet and satellite television propaganda operations are winning over a segment of Western opinion.
Trump, too, has adopted Putin's view. He has repeatedly endorsed Moscow's call for the West to join Russia in fighting "terrorism", and he has written off Aleppo as "basically fallen".
If Trump is elected, the US will have a president who sees no essential difference between the US and Russian military offensives in the Middle East. Putin will be vindicated: The moral gap between his regime and the White House will be difficult to detect.