<p>As Donald Trump marks a year back in office, his threats against Europe and hard-line trade policies are pushing his allies to the edge - while China and Russia, once considered America’s enemies, watch on with apparent glee.</p><p>And if the UK once thought flattery was the best form of defence, the president has put paid to that with potentially crushing tariffs and a swipe at Keir Starmer’s Chagos Islands deal - an agreement he had supposedly signed off on.</p><p>So how do we make sense of a global future in flux?On this episode of The Fourcast, Jackie Long was joined by geopolitical strategist Peter Zeihan.</p>