Japan is committed to mobilizing all its available resources to control the nuclear crisis, and will draw lessons from the disaster, said Naoto Kan, the prime minister of Japan, on Wednesday at the Paris-based Organization for Economic Cooperation and Development (OECD).

The Japanese head of government announced that situation in Japan is "steadily stabilizing" as he attended the celebration of the 50th anniversary of the OECD.

"I state this with firm conviction that the rebirth of the Japanese economy has already been forcefully set in motion," he said after extending congratulations to the advisory agency.

However, as the Fukushima nuclear crisis is not over, the Japanese leader stressed that "we are mobilizing all available resources in order to bring the situation under control at the earliest possible time."

Admitting it's "a historic responsibility of Japan to carefully analyze and examine the recent accidents, learn many lessons on nuclear safety," Naoto listed four major challenges for Japan's energy plan.

Besides the safety of nuclear energy, the three other challenges are: the environmental challenge of fossil fuels, the practical use of renewable energy and the potential of energy efficiency.

"Japan will now review its basic energy plan from scratch and is set to address new challenges," Naoto said.