ALL eyes remain focused on the situation in Japan, where rescue operations continue after a massive earthquake and tsunami. Concerns about damaged nuclear reactors continue to mount, and the extent of the catastrophe isn't yet clear. You can follow our coverage of the disaster here.

Markets reopened in Japan this morning, and the steep drop that began in the moments after the quake resumed. The Nikkei was off over 6%. European markets are down a little, and American futures are pointing that way as well, but the big drops seem to be confined to Japan. Oil has also dipped back below $100 per barrel. Commodity prices generally have moved down on the likely drop in demand from Japan.

Meanwhile, the Bank of Japan provided over $180 billion in liquidity to support markets. It also announced plans to double its asset-purchase plan in order to provide a life to an economy facing a massive and continuing blow. It will be interesting to see if other central banks feel the need to respond, as well.