Czech police step up presence in Prague

Czech police are stepping up their presence on the streets of Prague, as security arrangements for the two-day summit continue. Around 12,000 policemen will patrol the capital's streets on Thursday and Friday, in the country's largest ever security operation. Controls at border crossings have been tightened, while police marksmen will be deployed on rooftops. Rubbish bins have been removed from the city centre, amid fears of a bomb attack.