mind. they're meant to be able to withstand plausible incidents, an airplane crash, for example. one thing we learned at the fukushima disaster is that it is not just the safety of the reanterreant reactor itself. the power supply was compromised, the cooling systems that usually keep the reactor and the fuel cool weren't able to operate and so the reactor core melted down. so there are -- these are complicated systems there is a lot that could go wrong. a meltdown here as you see on the map, this reactor is on the river. so really an ecological disaster if the radioactive material got into the river and could flow into the black sea. and fukushima, there were traces of radioactivity all the way in california across the ocean. so the risks are real. >> playing with fire, right. playing with the fire in the middle of a war. matthew, thank you so much.