President Donald Trump’s closest advisor has an intuitive grasp of the hard realities of global power politics.

Once again, realism is in vogue. Apparently the White House is quite fond of the Peloponnesian War and wants to use it as a guidepost for contemporary foreign-policy challenges. If this feels like ...

The true meaning of “flexible realism” — abroad and at home. Credit...Photo illustration by Ricardo Tomas Supported by By ...

Among the collateral damage of the war in Ukraine is a school of thought: realism. This intellectual tradition insists that the pursuit of national interests trumps higher ideals, such as the ...