Scholar and bestselling author Steven Levitsky discusses whether the U.S. will go down a darkly familiar path.

Trump’s angry outburst at Ukrainian President Volodymyr Zelenskyy illustrated why authoritarians are lousy dealmakers, particularly when autocratic instincts are exacerbated by toxic masculinity.

The peer-reviewed evidence is all around us. The world must stop burning fossil fuels, and it must be done urgently. Power ...