Japan will demonstrate its leadership through "proactive diplomacy," including sending civilian aid to Afghanistan and passing new laws for antipiracy activities in Somalia, Foreign Minister Hirofumi Nakasone said Wednesday.

In his major foreign policy speech to the Diet, Nakasone said the world faces a rash of problems, including economic turmoil, terrorism, regional disputes and climate change.

"This is the time for us to express our views on such issues and develop a positive and a proactive diplomacy that will lead the international community," he said.