We need to keep the settled areas free of terrorists.
All the battles now are outside Mosul, in areas free of population.
Not only is land and space scarce, but finding areas free from contamination can also be a challenge.
In some cases, crabs that live in areas free of crazy ants are killed during their annual migration and so never return to their original forest.
In urban areas, free contraception is provided at government hospitals, but only on specified days and the queues are long which acts as a deterrent.
"Families deserve to live in safe, decent areas, free of crime and free of danger, and that's not there right now," Mr. Lovett said.
They can disperse groups of youths and drunks from traditional trouble-spots, some of which now proudly display signs declaring them areas free of anti-social behaviour.
In the course of his work Hérelle occasionally noticed clear spots (areas free of bacteria) on gelatin cultures of the bacterium under study.
Dr Rebecca Morris, of the University of Birmingham, who has conducted research into free schools and their pupil intake, said: "In some areas free schools are providing additional school places in areas where they were very much needed.
Larger, free-standing units positioned in areas free of turbulence, are still financially and environmentally viable – although you'll collectively need to come up with around £20,000-£30,000, and be prepared for a planning battle.
As well as pitches there's also a choice of two- or six-person tents or caravans in flat, shady areas, free Wi-Fi and electricity – and a great communal spirit among its travellers.
