Iain Duncan Smith has told Julia Hartley-Brewer that Emmanuel Macron is an "absolute threat" to French prosperity and warned him to be constructive on Brexit if he wants to protect his country's trade.
The hardline Brexiteer and Tory grandee also said John McDonnell's latest tax proposal is "shambolic" and high earners will just move themselves or their money abroad rather than pay the income tax rates Labour are proposing.
Speaking to Julia Hartley-Brewer, Duncan Smith told the French president-elect: "If you want to put French workers out of work, who rely on exports to the UK, the quickest thing you can to do is make this a drama.
"If, however, you want French workers to do well... you want to come to some kind of deal to allow them access to our markets."
When Julia asked if that was a threat of a promise, the former cabinet minister responded that Macron's attitude to Brexit was an "absolute threat" to his country.
On McDonnell, Duncan Smith said: "He’s always been a lover of Marx... he had a copy of Marxist thoughts and theories at the dispatch box.
"[When he outlined Labour's tax approach] I thought he was talking about the Marx brothers, because it's a shambolic policy."
Listen to the full interview above
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