US President Barack Obama
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Obama unveils gun control proposals

US President Barack Obama is expected to unveil wide-ranging measures aimed at curbing gun violence.

Mr Obama has said he favours bans on assault weapons and high-capacity ammunition magazines, as well as broader background checks.

The US gun control debate has been revived by last month's mass shooting at a school in Newtown, Connecticut.

There, a gunman shot dead 27 people, including 20 children and his own mother.