Secretary General Mark Rutte is headed to Washington. His style has at times frustrated the very European leaders who need him to hold the alliance together.

Drones launched by both Russia and Ukraine are veering off course, menacing countries that are not at war and driving their citizens to seek shelter.

The failure to protect NATO territory further increased anxiety about alliance solidarity, Russia’s intentions and Washington’s commitment to collective defense.

Germany has hugely increased its military spending, aiming to be less dependent on Washington. Its support for U.S. attacks on Iran may also give it leverage.

An internal Pentagon email, reported by the Reuters news agency, suggested Washington was reviewing options to penalize the two nations for insufficiently supporting the war in Iran.

European Union nations have a little-known obligation to protect one another. Experts caution it is no replacement for NATO.

For a second time, President Trump extended the deadline for Iran to fully reopen the Strait of Hormuz.

Trump and other American presidents have criticized Canada for failing to meet the alliance’s military spending minimum of 2 percent of gross domestic product.

Ukraine has created online marketplaces to let units select their own drones, a break from generations of standardized and centralized weapons procurement.

The Israeli military said it had killed the spokesman for Iran’s Islamic Revolutionary Guards Corps, and Iran warned that it could target American and Israeli military personnel.

While some European countries said they were discussing ways to help reopen the Strait of Hormuz, several rejected President Trump’s calls to send warships.

President Trump on Sunday called on NATO allies to help end the de facto Iranian blockade of the Strait of Hormuz, a key shipping lane for about one-fifth of the world’s oil.

This time, President Trump went to war without preparing the public, seeking U.N. approval or even consulting allies. But they will have to pick up the pieces.

Humanitarians proposed a loophole in international law. Decades later, Trump is jumping through it.

Humanitarians proposed a loophole in international law. Decades later, Trump is jumping through it.

NATO downed a missile fired by Iran at Turkey, and a U.S. sub sank an Iranian Navy ship off Sri Lanka, thousands of miles from the war zone.

Friedrich Merz has called for greater European unity, but he did not publicly object to the president rebuking Spain and Britain during an Oval Office meeting.