(CNN) A super PAC backing Hillary Clinton called Donald Trump "a punchline" in a new ad released Thursday, responding to a video the Republican front-runner made mocking the former secretary of state for barking like a dog at a campaign event.

And that Trump ad has also attracted a critical response -- from the Kremlin.

"Yesterday Donald Trump released a video in which he mocked Hillary Clinton and asked, 'Is this what we want for a president?' Well, Priorities USA fixed it for him, (you're welcome)," said Justin Barasky, a spokesman for Priorities USA, in an email.



The ad opens with clips of Russian President Vladimir Putin performing martial arts and a masked terrorist pointing a weapon at the camera.

"When it comes to facing our toughest opponents, the Republicans have the perfect answer," words on the screen say, before cutting to a recent clip of Trump.

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