Medvedev submits to formal probe into Russian elections, but rejects new vote; Protesters call for Putin to stand down; India and China to join US in climate treaty; Cameron defends EU veto in parliament, but where's Nick Clegg?; Elections in Syria, but no-one shows up; South Korea starts 'Christmas tree war' against North Korea; and more
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World News Brief, Tuesday December 21
South Korea still on "high alert" after military exercises (+ analysis); Bill Richardson claims deal with North Korea to return nuclar inspectors; Iraqi government draws closer, but debates go on; Democrats look to sure up votes on new START; Thousands protest election in Belarus; and more
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