Fishermen trawling the waters off Japan's eastern coast have been alleging for a while that radioactive water is again spilling into the Pacific from the Fukushima power plant that melted down after a massive earthquake in 2011. On Feb. 24, Tokyo Electric Power Co., which is responsible for the site, admitted those suspicions were justified.

And it turns out that Tepco knew about this latest radioactive leak since last May — and the giant utility said nothing for almost a year.

In the 15 days since Tepco finally confessed, have investigators raided its Tokyo headquarters? Have regulators demanded that heads roll? Has Prime Minister Shinzo Abe used his bully pulpit to demand accountability from the company that gave the world its worst nuclear crisis since Chernobyl?