The alliance had planned to celebrate its 75th anniversary, but Biden’s continued slip-ups have soured the mood.

President Joe Biden heads into the NATO summit meeting he's hosting in Washington this week with two distinct challenges, neither of them easy.On the international stage, he wants to make a case for preserving global alliances in an era when many populist and nationalist leaders are looking inward,

President Joe Biden will shift this week from focusing on campaigning for reelection to hosting a NATO summit. But that won't quiet the increasingly urgent questions about his precarious political situation now threatening to consume his own party.

When NATO leaders welcome Ukrainian President Volodymyr Zelensky to their summit in Washington this week, they will reaffirm that Kyiv will one day become a member and vow to keep arming its troops.

NATO leaders meet this week for a summit commemorating the 75th anniversary of the military alliance, which has never been larger and more focused.

NATO, meeting in Washington, marks its 75th anniversary this year. But for key members, including the U.S., France and Germany, it's a turbulent time.