The London Marathon is in a week or two, so far , As far as I know, no group has claimed responsibilty, even though a Saudi Arabian national is under guard in hospital. There are suggestions that because the bombs exploded with white smoke, & the explosions were relatively small, they did not contain plastic explosives. There is a group of US citizens, of middle eastern extraction, that has a website, in the middle east, called " make a bomb in your Moms kitchen". What does it mean for Australia? perhaps unprecedented security at large gatherings of people. Time will tell, but we should not panic, Bob

