Clinton tells DPRK to denuclearize

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US Secretary of State Hillary Clinton says "irreversible de-nuclearization" is the only viable option for the Democratic People's Republic of Korea.

U.S. Secretary of State Hillary Rodham Clinton speaks during a joint news conference with Thailand's Foreign Minister Kasit Piromya at a hotel in Phuket, southern Thailand Thursday, July 23, 2009. (AP Photo/Apichart Weerawong)

Clinton warned the DPRK would face "unrelenting pressure of global sanctions" unless its leaders revise their position on its nuclear program. She was speaking at the ASEAN Security conference.

Clinton says China, Japan, Russia and South Korea are all in agreement with Washington on this goal. She also called Iran's nuclear ambitions "unacceptable."

She says Iran's pursuit of nuclear weapons will not advance its security or achieve its goals of enhancing its powers, but instead spark a regional arms race.