The U.S.’s call for Europeans to spend more on militaries prompts talk of changing the rules for what counts as military ...

When Belgium's Willy Claes took over as NATO secretary general in 1994, Bill Clinton was US president, the Cold War had ended ...

The split between Europe and the United States over how to end the war is exposing a new, disorienting reality for an ...

Finnish President Alexander Stubb said U.S. President Donald Trump had become impatient with Russia over a Ukraine ceasefire.

President Donald Trump has repeatedly threatened to leave the NATO alliance should member states fail to increase defensive ...

After following America’s lead for 80 years, the continent’s democracies do not recognize the danger now before them.

NATO Secretary-General Mark Rutte warned the United States and Europe on Wednesday against any temptation to "go it alone" on ...

Senior Trump administration officials have discussed in recent days the likelihood that the U.S. will be unable to secure a ...

The Trump administration threatens to upend the world's most successful alliance—that was the clear message coming out of the ...

Fears have rippled through Europe about whether the U.S. under its new steward, President Donald Trump, could abandon NATO. But Trump, a notorious skeptic of the U.S.-led transatlantic alliance ...

Former NATO Supreme Allied Cmdr. Wesley Clark weighed in on a report that President Trump’s administration is considering ...