correspondent jonathan marcus. he has been covering this for a long time. we ve heard from stephen as well as the latest lines coming in from azadeh about the developing situations and ijust want about the developing situations and i just want to get your thoughts on what the possible escalations of this might be. you re quite right. i think caution is the watchword here. i think we can probably rule out a deliberate russian attack on poland. that would be extraordinary, that would really be making a drama out of a crisis. i think this is some kind of accident, either russian missiles have been inadvertently crossed the border into poland and struck a target, or possibly also, ukrainian s 300 air defence missiles trying to intercept russian attacking missiles have