German Chancellor Angela Merkel warned in Berlin Wednesday that the international community would take action if Iran refuses to quit its nuclear program, but she again ruled out military force in dealing with the matter.

"Iran's answers have not satisfied us," she told the parliament. "The door for diplomacy will not be shut but we will not merely look on without taking action."

Doing nothing was not an option while Iran ignored calls by the United Nations and the International Atomic Energy Agency (IAEA) to end its uranium enrichment activities, Merkel said.

But she did not give any details of the possible action, reaffirming that Germany opposes use of force as she said "the military option is not an option for Iran."

A UN deadline for Iran to stop uranium enrichment expired on Aug. 31.