In a videotape address broadcast on Qatar's al-Jazeera television, monitored in Beirut, Zawahiri said: "We should start resistance from now because the interests of the Americans, French, British, Australians, Polish, Norwegians, Japanese and South Koreans are spread everywhere and these people have participated in the occupation of Afghanistan, Iraq and Chechenya and have given Israel the means for life."
Zawahiri stressed the liberation of Palestine is a "legitimate cause and the duty of every Muslim and should not be limited to fighting the Jews but also the U.S. and the West."
He warned the West is seeking to place the whole Muslim world under its mandate "by swallowing one country after the other as they did in Iraq and Afghanistan."
"The Muslim youth should not wait any longer and should start resistance immediately to foil the plans of the crusaders ... It is the era of armed resistance in the Muslim nation," he said.
Al-Qaida network led by , Osama bin Laden, is blamed for most bombing attacks against Iraqi police and national guardsmen, and U.S. forces.