Hillary Clinton is slamming Donald Trump’s response to the so-called Brexit in a new nationwide ad .  

Last week British citizens voted to leave the European Union , resulting in a worldwide shock that rocked financial markets. Clinton, the presumptive Democratic presidential nominee and former Secretary of State, is highlighting the likely GOP nominee’s response to the vote.  

According to a Clinton campaign official, the new ad is a national cable ad buy that begins this week. The official said its purpose is “to make clear that Donald Trump failed to provide the steady leadership needed instead proving he is temperamentally unfit to be President of the United States and that he is in it for no one but himself.”  

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Trump praised the historic vote while in Scotland for the re-opening of his golf course. Trump drew a parallel between the British decision and his own campaign.  

“People want to take their country back,” Trump said, according to C-SPAN video of his press conference. “They want to have independence in a sense.”  

[  Trump Praises Brexit in Scotland, Clinton Calls for ‘Calm’ Leadership

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He also implied that an economic downturn could boost profits at his golf course in Turnberry, Scotland, which Clinton’s new ad highlights.  

“If the pound goes down they do more business,” Trump said. “When the pound goes down more people are coming to Turnberry, frankly.”  

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The new Clinton ad highlights those remarks, and pointed out that Trump was discussing his renovated golf course after the vote.  

“Every president is tested by world events,” says the ad’s narrator, “but Doanld Trump thinks about how his golf resort can profit from them.”