Krishna and Nakasone also agreed that climate change was an important global challenge. They expressed the hope that all countries will participate constructively under the United Nations Framework Convention on Climate Change (UNFCC) and the Kyoto Protocol to have an "ambitious" and at the same time "equitable and fair" outcome at the Copenhagen talks later this year.

They hoped that the outcome of the Copenhagen talks on climate change will ensure that developing countries are able to continue their economic growth at an accelerated pace.

The two leaders also discussed regional and multilateral issues, including the UN reform and economic arrangements in Asia.

Both India and Japan are seeking permanent membership of the powerful UN Security Council and are part of the G-4 grouping to pitch for their case along with Germany and Brazil.

Krishna also said that he assured Nakasone about India's constructive participation in negotiations on nuclear disarmament.

"Our consistent policy is to support a universal, non-discriminatory and verifiable regime for a nuclear weapon-free world," he said.

The nuclear test and series of missile launches by North Korea also came up for discussion during the talks. Krishna also called on Prime Minister Taro Aso and had meetings with Japanese political leaders, including those from the opposition Democratic Party of Japan.