Washington Post columnist Robert Samuelson is worried. He thinks that maybe — just maybe — the US government is not spending enough on defense. In a column entitled, “Here’s Why We Could Be Under-Spending on Defense,” Samuelson has come up with a complicated formula...

Two world wars began because of unconditional pledges made by one country to come to assistance of another. On July 5, 1914, Kaiser Wilhelm II of Germany pledged his country’s complete support for whatever response Austria-Hungary would choose to make against Serbia...

Last week, German lawmakers sent a stark message to Washington. The argument escalated following a series of flippant comments made by US ambassador Richard Grenell who had demanded Germany increase its defense spending, claiming it was “really insulting to expect the...