A Thai army soldier stands guard on a city centre street after martial law was declared on May 20
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Thailand army declares martial law

20 May 2014 Last updated at 22:53 BST

The Thai military has imposed martial law amid a political crisis "to preserve law and order", but says the surprise move is not a coup.

Soldiers have taken over TV and radio stations, and blocked off roads in the capital, Bangkok.

Jonathan Head reports from Bangkok.

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