yesterday. what exactly is ahead for the former head of imf. also, today, this, folks, is our last day. today is doomsday. you might have heard about did. so far so good, but we re told the apocalypse should be starting today. the radio networks have spent millions of dollars to warn you that the end is here. we re here at the beginning of this cnn saturday morning. it might be our last. let s all try our best to make it a good one. it s saturday, may 21st. up front, let s start with a breaking story we re getting out of kabul, afghanistan. at least one or more suicide bombers have attacked a hospital there. at least six people have been killed, another 26 are hurt. the taliban is claiming responsibility along with a far higher death toll than afghanistan authorities are confirming. we will take you back live to kabul in just a few moments with the latest on this still developing story. this morning s bomb attack in kabul coincides with a warning from david petraeus. in it