Nearly 80% of ship-to-shore cranes at U.S. ports are made by ZPMC, a Chinese state-owned company. In recent years, U.S. officials have grown concerned that these giant cranes could be used for spying on the U.S. China says these concerns are “paranoia-driven.” WSJ’s Aruna Viswanatha reports on why cranes have become the latest point of contention in U.S.-China relations.  Further Reading: - Pentagon Sees Giant Cargo Cranes as Possible Chinese Spying Tools  - Espionage Probe Finds Communications Device on Chinese Cranes at U.S. Ports  Further Listening: - The Billionaire Keeping TikTok on Your Phone  - How a Balloon Burst U.S.-China Relations  Learn more about your ad choices. Visit megaphone.fm/adchoices