President Biden delivered a series of sometimes shaky answers to questions from reporters during a nearly hourlong news conference Thursday, but he also demonstrated a command of foreign policy and avoided repeating the worst moments of the presidential debate two weeks ago that set off turmoil within his party.
After initially reading from a teleprompter then repeating his vow to stay in the race, Mr. Biden tried to defuse some questions about his age and fitness for office, but at one point fumbled a question about Vice President Kamala Harris,…
