He's got a point, even shithole countries will have worked out how to make simple bioweapons by now, their only obstacle is a reliable delivery mechanism and scaling up the manufacturing. There have been a few failed terrorist plots centred around water supply sites I'd be very surprised if someone doesn't employ a drone to target a city or food production site with (something) within the next decade. Remember when they claimed to find no WMD in Iraq, yet Iraq was happily developing a low purity VX agent, so exactly how high is the standard here?