The White House has promised a thorough investigation of the matter, and steps to guard against a repeat of the tragedy.

VOA: standard.2009.11.10

He added that the second round must not be a repeat of the first.

VOA: standard.2009.10.20

The former foreign minister had given President Karzai until Saturday to remove the country's top election official in an effort to avoid a repeat of the massive fraud that marred the August 20 presidential election.

VOA: standard.2009.11.01

Professor Christiano says the next step is to repeat the study in future research, with a larger number of patients.

VOA: special.2011.04.05

He says the South needs to focus any talks on preventing a repeat of such an incident.

VOA: standard.2009.09.07

President Obama says he wants to avoid a repeat of last year's failure of several banks and other financial firms, which devastated the U.S.economy.

VOA: standard.2010.01.21

Researchers adjusted their computer algorithm to the slower insulin absorption rate and on a repeat experiment blood glucose was tightly controlled in all of the subjects.

VOA: standard.2010.04.15

Speaking to a conference of military and civilian counterinsurgency experts, General Petraeus declined to discuss the specifics of the McChrystal assessment or the ongoing deliberations, but he did repeat a point he has often made about how he believes extremists must be fought.

VOA: standard.2009.09.23