Racing to gain the upper hand in everything from semiconductors to AI and quantum computing, China and America are now locked in a full-blown tech war. The People's Republic is going all-out to topple its arch-rival as global innovation leader, while the US is fighting back by imposing strict export controls and punishing tariffs to halt Chinese development and keep its coveted crown.

As the two powers vie to control the future, read on to discover when the tech war started, how the adversaries are faring in nine key areas, and which nation currently has the edge. 

All dollar amounts in US dollars unless otherwise stated.