At foreign embassies across Washington, envoys say they are bracing for the unknown when President-elect Donald Trump is sworn into office Friday and starts issuing orders.
In capitals around the globe, leaders and foreign policy experts worry that Trump’s calls for radical change and brash style could produce instability or worse in a global crisis.
They are confused by his scattershot fusillade of provocative tweets and worry that he may upend long-held alliances, treaties and international organizations.
From Mexico to China, rarely before has an incoming American president so discombobulated the rest of the world, allies and adversaries alike.
“Trump is a...