This is going to go over well ...

... Navy sub leaked radioactivity for two years.

Last week, Navy officials told Japan that the USS Houston, a Los Angeles-class fast attack submarine, had made one port call -- in March -- while leaking the contaminated fluid.

But after reviewing records of the sub, the Navy told Japanese officials Thursday that the Houston had been leaking much longer, since June 2006, and had made port calls to Japanese bases at Sasebo, Yokosuka and Okinawa before the leak was discovered.

Yay, another PR mess for the US!