Japan's Prime Minister Naoto Kan said on Friday he was ready for a long battle to bring the quake-hit Fukushima nuclear plant under control.
He also said in a nationally broadcast news conference that he wanted to decide by the end of the month on the content of an extra budget for earthquake relief.
"I am prepared for a long-term battle over the Fukushima nuclear plant and to win this battle," he said.
"At the current stage, we cannot say that the plant has been sufficiently stabilized. But we are preparing for all kinds of situations and I am convinced that the plant can be stabilized. We cannot say at this stage by when this will happen, but we are trying our best."