Nobel Peace Prize laureates are calling on world leaders to negotiate the "universal, legal and verifiable elimination of nuclear weapons."

The statement, which came Wednesday at the end of an annual gathering of the peace prize winners, also called for negotiations to end armed conflicts in Syria and elsewhere.

The winners met in Warsaw this year to mark 30 years since Lech Walesa won the prize for leading the Solidarity movement, which helped topple communism in Poland.

A special guest was actress Sharon Stone, who was honored for her work to fight HIV and AIDS.

The meetings were initiated by former Soviet leader Mikhail Gorbachev in 2000.

Gorbachev did not attend this year due to medical treatment, but notable attendees included laureates Shirin Ebadi of Iran and the Dalai Lama.