Egypt's President Mohammed Morsi also called for limits on free speech, to help protect "the world from instability and hatred."
Morsi said Wednesday his country would respect freedom of expression, but only when it "is not used to incite hatred against anyone, one that is not directed towards one specific religion or culture."
Yemen's President Abd Rabbo Mansour Hadi told the General Assembly on Wednesday "there should be limits for the freedom of expression, especially if such freedom blasphemes the beliefs of nations and defames their figures."
Zardari warned that the "international community must not become silent observers." In a speech Tuesday he called for the criminalization of "acts that destroy the peace of the world and endanger world security by misusing freedom of expression."
Indonesia's President Susilo Bambang Yudnoyne -- head of the world's most populous Muslim-majority nation -- told the General Assembly on Tuesday that previous initiatives at the U.N. had failed to halt intolerance. The "defamation of religion persists, we have seen yet another one of its ugly faces in the film 'Innocence of Muslims,'" he said.
In his speech Tuesday to the General Assembly, President Obama described the anti-Islam film as "crude and disgusting," but mounted a defense of freedom of expression.
He warned that "in a diverse society, efforts to restrict speech can become a tool to silence critics, or oppress minorities."
"The strongest weapon against hateful speech is not repression, it is more speech - the voices of tolerance that rally against bigotry and blasphemy, and lift up the values of understanding and mutual respect," Obama said.
Speaking Saturday, Liechtenstein's Foreign Minister Aurelia Frick said that the "hateful slander of people on the basis of their culture or religion is unacceptable," but did not join calls for new laws. She urged nations instead to promote values of "tolerance, understanding and mutual respect."