Reuters: President Barack Obama said on Friday the United States preferred diplomacy in dealing with Iran over its nuclear program, but would consider imposing "sanctions that bite" if the diplomatic track did not work.

CNN: President Obama recently shared sensitive intelligence with Russia and China about Iran's newly unveiled nuclear facility to get the two countries' leaders on board with new sanctions against Tehran, senior U.S. officials revealed Friday.

Reuters: President Barack Obama warned Iran on Friday that it was "on notice" and said it would have to "come clean" about its disputed nuclear program at a meeting of world powers on October 1.

AP: Western intelligence puts Iran's newly revealed nuclear plant in the arid mountains southwest of Tehran, not far from one of the holiest cities in Shiite Islam.

Reuters: Iran was not obliged to tell the Obama administration of every uranium enrichment plant it has, President Mahmoud Ahmadinejad said on Friday, turning up the heat in a dispute over Tehran's nuclear program.

AFP: A senior US lawmaker said Friday that it was time to impose punishing new US sanctions against Tehran in response to the revelation of a previously secret Iranian nuclear facility.

Reuters: Russia said on Friday that Iran's construction of a second uranium enrichment plant violated U.N. Security Council decisions and should be investigated immediately by the U.N. nuclear watchdog.

AFP: Canadian Prime Minister Stephen Harper joined the United States, Britain, France and Germany on Friday in demanding immediate access to a previously secret Iranian nuclear site.

Reuters: The United States has been monitoring for several years Iran's construction of a newly disclosed uranium enrichment plant and believes it is too small to produce fuel for a civilian nuclear power reactor, a U.S. official said on Friday.