【明報專訊】AMERICAN pop diva Ariana Grande's concert in Britain's Manchester Arena was rocked by a suicide attack, causing dozens of deaths and injuries. ISIS has claimed responsibility for the attack, vowing that there will be more to follow. This is the worst terrorist attack in Britain since the 2005 London bombings. Governments in the United States, Japan and Singapore have all said that security will be strengthened in large performances and sports events. And, according to the AsiaWorld-Expo, if Ariana Grande's Hong Kong concert takes place as scheduled, more stringent surveillance will be conducted to ensure safety.