"We are asking them [officers] to do something different from what they did previously. It’s not about standing back but about going forwards towards the threat. In that there may be casualties and in meeting that threat they will have to look over casualties that might have been injured and wait until it’s safe for someone else to go and help," Gallan said, as quoted by The Guardian.
She added that the dilemma was whether to stand back, in which case more people could die, or to go on the offensive, and attempt to stop the terrorists from killing more people.
European countries began introducing additional security measures, changing their approach to terrorist activities in the wake of recent deadly attacks in the French capital and an explosion on board a Russian-owned Kogalymavia A321 airliner. The attacks were claimed by extremists of the Islamic State (IS, or Daesh in Arabic world), a group that is outlawed in many countries, including Russia and the United States.