watching cnn newsroom. >> i'm lynda kincade more now on our breaking news iranian state media says anunderway following the killing of hamas political leader ismail haniah. he was reportedly assassin it's an aided in tehran after attending the inauguration ceremony of iran's new president hamas says, hi neil was killed in an israeli raid on his residence one of them hamas official calls the assassination a cowardly act and says, high-needs was killing quote, will not pass in vain palestinian authority president mahmoud abbas says, jaime has killing is a dangerous development live now to cnn's jomana karadsheh, who joins us from london. just how dangerous are we talking? jomana? >> well, lynda, the entire region has been on a knife's edge since this weekend since that that's attack on the occupied golan heights that killed 12 children and teenagers. and then you saw what was israel's response yesterday in lebanon targeting a hezbollah senior commander. and so you already have this region that has been on a knife's edge for a few days. it has been obviously since october concerns about