Iran may possibly spark Mideast nuclear arms race: Biden

US Vice President Joe Biden said on Thursday that Iran faces a stark choice to either scrap its nuclear programme or face increased isolation. Biden was addressing EU lawmakers.Iran's nuclear programme violates its obligations under the nuclear non-proliferation treaty and risks sparking a nuclear arms race in the Middle East, Biden told.Tehran faces a stark choice, abide by international rules and rejoin the community of responsible nations, or face further consequences including UN sanctions and increasing isolation, Biden warned.Biden also criticised Iran's leaders for promoting terrorism and cracking down on dissent in their own country.