The period following the Second World War is often referred to as the American Century, when the rise of the United States to global hegemon accelerated and solidified. Those who take an interest in the global political economy are starting to wonder if that era is coming to a close. But the volatility of US policy in recent years, as much as it has given rise to questions over whether this period of American exceptionalism is at an end, also carries with it many elements which could herald its continuation. Marvin Barth, founder and author of Thematic Markets, an independent research effort focused on long-term trends and themes, joins the podcast to pore over the most critical questions facing the United States and what the answers mean for its place in the world.

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The calm after the storm of April's volatility has been maintained, despite a massive fiscal expansion passing through Congress and being signed by the President, and the end of the deferral period for most of the tariffs initially announced at the start of Q2. As we await the economic impacts of the One Big Beautiful Bill and the onset of significantly higher tariffs on most of the US' trading partners, Noel Dixon, a senior macro strategist on the team at State Street Markets, returns to the podcast to provide an independent outlook on the boosts and drags from policy and how damaging any economic costs might be in future electoral cycles.

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In this 100th episode of Street Signals, a theme ever-present throughout its two-year history comes to the fore once again: the ability of financial markets to come to grips with and move past seemingly implacable uncertainty. Q2 2025 alone provided what felt like a decade's worth of seismic and (theoretically) negative shocks to sentiment, yet equity markets have recovered quickly and are poised to push to new all-time highs, while many traditional safe haven currencies are on the back foot. This week, Peter Vincent, head of FX trading in EMEA for State Street Markets and a podcast regular, returns to offer his thinking on why markets remain so resilient in the face of such risks, whether the US growth outlook is poised to deteriorate and his outlook for currencies in the coming months.

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