text:  From NPR and WBUR, I'm Scott Tong with Lisa Mullins. This is Here and Now. The world's eyes are on President Biden at the NATO summit. On this final day in Washington, European leaders are watching Biden's performance, his commitment to European security, and his political future. This evening, Biden holds a solo live press conference, and to many, it's a make or break moment. Last night, Biden greeted world leaders for a White House dinner.