But,once the fire is out, the well still needs to be covered,or capped, to stop the flow of oil.

VOA: special.2009.03.22

Experts say his work during the outbreak helped stop the Ebola virus from spreading out of control.

VOA: special.2009.01.27

In the Czech Republic, the president said he laid out a strategy to work with Russia and other nations to stop the proliferation of nuclear weapons.

VOA: standard.2009.04.11

Therefore,we would not be committed to any of this." A hardline Iranian member of parliament,Mohammed Karamirad, warned Saturday that Tehran could pull out of negotiations with the International Atomic Energy Agency or stop it from inspecting Iran's nuclear facilities.

VOA: standard.2009.11.28