This would not be surprising after he has pulled out of the Paris Climate agreement, the Iran nuclear agreement and the TPP.
The column states “In recent conversations here, European officials cast a more sinister light on what they think Trump has in mind in picking very public fights with America’s closest allies and the institutions they and the United States have created to instill some order and fairness in the international system. These officials fear that Trump is laying the groundwork for a U.S. decision to withdraw from the World Trade Organization, the 164-nation body that adopts and enforces global rules of trade and provides dispute settlement mechanisms when conflicts between nations arise.”
more background on Trump’s attitude toward other countries: