 CBS News correspondent Olivia Rinaldi, she's in West Palm Beach, Florida. The Republican National Convention begins next week in Milwaukee. The former president has hinted he might reveal his pick by the start of the gathering. Well, the leaders of 32 NATO countries have been wrapping up the details of their 75th anniversary summit here in Washington. The culmination of that was that solo news conference from President Biden over the past hour or so. Looking at the future, they say they have some stiff challenges. WTOP National Security Correspondent J.J. Green.