Advanced semiconductors, the tiny components crucial for everything from smartphones to national defense, are at the heart of US-China geopolitical rivalry. It's no wonder, then, that the US has increasingly restricted China's access to these chips, while Beijing fights back with its own trade barriers.

So where are we in the great chip war? Why are they so important and difficult to make? And what are the prospects for new alliances as chip-hungry countries navigate the new AI world? Chris Miller, author of Chip War and professor of international history at Tufts University, sits down with John and Katia for a crash course on this technology and what lies ahead.