Key facts
- President Donald Trump threatened tariffs on Europe if Canada was made an associate member.
- Trump conditioned military aid to Ukraine on President Zelensky investigating Joe Biden.
- Mira Rapp-Hooper argues that arbitrary coercion by the US undermines its global position.
- Rivals like China are seeking to replace the US as the rule-setter in global conduct.
- US power has historically been used in a disciplined fashion, leading to less international resistance.
