An armed soldier and armed police officers stand guard outside the Houses of Parliament in London, Britain, on May 24, 2017. British Prime Minister Theresa May announced Tuesday night that the country's terror threat level has been raised from "severe" to "critical", its highest level. (Xinhua/Ray Tang)
Britain's terror threat level raised to highest level
Xinhua| 2017-05-25 07:32:12|Editor: Hou Qiang
KEY WORDS: Britain
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