As Donald Trump’s landmark legislation narrowly passes the Senate, our correspondent analyses the long-term political and economic consequences. Why foreign fighters are heading to the front line in Ukraine. And how congestion charging transformed the streets of New York. Listen to what matters most, from global politics and business to science and technology—Subscribe to Economist Podcasts+For more information about how to access Economist Podcasts+, please visit our FAQs page or watch our video explaining how to link your account.