A senior correspondent at Vox, specializing in foreign policy and international conflict, authored the 2018 book “Invisible Countries.” At the NATO 75th anniversary summit in Washington, DC, President Biden’s performance in a recent debate raised concerns about his re-election chances, potentially impacting NATO relations. Rachel Rizzo from the Atlantic Council noted European allies’ worries about Biden’s ability to win. However, national security adviser Jake Sullivan claimed allies praised Biden’s efforts to strengthen NATO.