During a speech at the Democratic National Committee on Friday, President Barack Obama was heckled by a man who accused him of making a “nuclear plan” against Russia.
“Mr. Obama, tell us about your nuclear plan in Russia!” a man yelled from the crowd.
"I'm sorry, who is that back there? What the heck are you talking about?" Obama asked the man.
The audience laughed and applauded.
"I don't know anything about that plan,” he added, according to The Hill. “I don't know what you've been reading."
The speech took place less than one hour after Obama warned Russia about military intervention in Ukraine.
Russian President Vladimir Putin received permission from parliament on Saturday to move military into the Ukraine. The parliament also voted unanimously to recall Moscow’s ambassador from Washington over the president’s comments.