PARIS  Osama bin Laden warned France in an audiotape broadcast by Al Jazeera television on Wednesday that it would face killings and kidnappings if it did not withdraw troops from Afghanistan.

He also justified the kidnapping of five French citizens in Niger last month, saying that France mistreated its Muslims.

“The equation is very clear and simple: as you kill, you will be killed; as you take others hostages, you will be taken hostages; as you waste our security we will waste your security,” Mr. bin Laden said.

France has about 3,750 troops in Afghanistan, making it the fourth biggest contributor to the international military mission.