India, Jan. 22 -- Rattled by President Donald Trump's aggression towards Greenland, the European Union is readying counter-measures against the United States. But as primarily a trading bloc of 27 nations, the EU's toolkit is mostly financial instruments, from steep tariffs on US goods to the so-called "trade bazooka" touted by French President Emmanuel Macron.

The term is shorthand for the bloc's Anti-Coercion Instrument, or ACI, that could sanction individuals or institutions found to be putting undue pressure on the EU. Those sanctions could inflict untold billions of dollars in costs to US companies by restricting EU market access, barring them from EU public tenders, and potentially limiting foreign direct investment and curtailing ...