At a lecture at a downtown Athens hotel on globalization and Pakistan's role, Aziz said his country opposed the proliferation of nuclear weapons but supported the peaceful development of nuclear energy in line with terms and prerequisites set by the International Atomic Energy Agency (IAEA).

He said Pakistan was "a responsible nuclear power" and it was India's nuclear program that compelled Islamabad to follow the path of the development of nuclear weapons.

The prime minister underscored the need to solve the Iranian nuclear issue by peaceful means.

He also stressed that the Kashmir problem should be settled in a way which satisfies Pakistan, India and the people in the disputed Kashmir region.

Earlier Monday, Greek Prime Minister Costas Karamanlis met Azizon bilateral economic cooperation. The two sides signed an agreement on tourism cooperation.

Karamanlis said Greek-Pakistani bilateral relations were on an "upward course," adding that his talks with Aziz covered a wide range of topics, including regional issues, as well as the challenges faced by the international community, such as terrorism.

Aziz arrived here on Sunday for a three-day official visit.