They do not know why da Vinci painted it, or how it ended up in the collection of French ruler Francis the First.

VOA: special.2010.06.23

Some U.S.legislators are demanding answers about why Hasan's intercepted communications with the radical cleric did not prompt wider scrutiny of the psychiatrist's actions or intervention that could have prevented the attack.

VOA: standard.2009.11.10

Still,questions remain from his time as head of the Vatican's main office of doctrine and why Cardinal Ratzinger chose not to discipline or defrock the American priest, the Reverend Lawrence Murphy.

VOA: standard.2010.04.01