Plain old garden variety hyperbole.
It may be a threat to those nearby but anyone who declares it to be a threat to humanity is an idiot.
There is now no protection to that area and a large quake on the southern half of the triple junction would be world impacting if indeed anyone of the reactor building but indeed the spent fuel pool storage of Reactor 4.
There is a load value on that triple junction that local seismologists are very weary of.
It is any area to watch but then again on a volcanic note....look towards Columbia for the next story....!
http://www.ingeominas.gov.co/Manizales/Volcanes/Nevado-del-ruiz/Registros-en-linea.aspx
Here's three from the article:
Ambassador Muratas letter says:
It is no exaggeration to say that the fate of Japan and the whole world depends on NO.4 reactor. This is confirmed by most reliable experts like Dr. Arnie Gundersen or Dr. Fumiaki Koide.