He praises enemies, he ignores allies, he upends decades of policy.
And Donald Trump hasn’t even been sworn in as president.
In a series of telephone calls with foreign leaders apparently eager to congratulate the president-elect, Trump has broken many of the rules that govern delicate matters of international relations, leaving State Department diplomats shocked and confused.
The latest was Trump’s decision Friday night to speak to the president of Taiwan, which no U.S. president or president-elect has done in nearly 40 years. The U.S. has no...