Resources on local history may also provide useful information.

VOA: special.2010.06.28

China also showcased new mobile radar units, unmanned drones and helicopters equipment state-run TV announcers said would be useful for the "new information-based environment."

VOA: standard.2009.10.01

The U.N.investigators agree that torture in secret places of detention might be useful in eliciting information.

VOA: standard.2009.03.21