President Trump's unconventional policies and high-stakes manoeuvres have shaken up global trade and security, now Wall Street is wondering if the global financial system may be next. The concept has been called the "Mar-a-Lago Accord" and its aim would be to weaken the US dollar to help American exporters. But the idea faces hurdles and pitfalls, so what would be involved in a "Mar-a-Lago Accord"? Our Global Economics Correspondent, Enda Curran, joins host Caroline Hepker to discuss.