Sarah Jessica Parker fills in for Leonard Lopate. On today’s show: New Yorker writer Dexter Filkins talks about the challenge of war reporting. Then, artist Alex Katz discusses his long career. Jessie Mueller talks about playing Carole King in the Broadway musical, “Beautiful,” along with Doug McGrath, who wrote the show’s book. And playwright Terrence McNally on his play, “Mothers and Sons,” along with stars Tyne Daly and Frederick Weller.