right now. out front next the breaking news, a u.s. flag in flames as massive protests break out in iran following u.s.-led air strikes in yemen. and tonight biden threatened more strikes to come. plus a cnn investigation tonight. gaza hospitals on the edge of collapse. a top target for israel, which says hamas is using some as command centers. so tonight we have an in-depth look what is actually happening inside those hospitals. it is a special report you will see first here out front. and just in tonight, ron desantis going straight to south carolina after iowa even though new hampshire comes first. he ll be in both on the same day. is it a smart move? john king is here with me at the magic wall. let s go out front. and good evening. i m erin burnett on this friday. out front tonight the breaking news, protesters burning the american flag on the streets of iran. you can hear them chanting, saying an attack on yemen equals war. these images coming out of tehran tonight c