. >>> in our signature segment, broadway's most celebrated living composer and lyricist, stephen sondheim. >> i can't imagine anybody approaching every single new project without doubt. in fact, i fink if you do it is probably not going to turn out that well. >> and, from bogota columbia to columbia south carolina, caring for the homeless next, on pbs newshour weekend >>> made possible by judy and josh westin, the wallace family. the cheryl and philip millstein family, rauz ln p. walter. corporate funding provided by mutual of america, designing customized, individual and group retirement products. that is why we are your retirement company. additional support provided by -- and by the corporation for public broadcasting and by contributions to your pbs station from viewers like you. thank you. this is pbs news hour weekend. >>> good evening. thanks for joining us on this first sunday of our new broadcast. i'm hari sreenivasan. the president of syria, bashar-al-assad, said he is readying his nation for an attack by the united states and plans to retaliate if there is one. assad made his c