WASHINGTON - Saddam Hussein was telling the truth, this time. The United States just didn't believe him.
So it took the most powerful military in the world 18 years to find the remains of the only U.S. Navy pilot shot down in an aerial battle in the 1991 Gulf War.
Michael "Scott" Speicher's bones lay 18 inches deep in Iraqi sand, more or less right where a group of Iraqis had led an American search team in 1995.
The search for Speicher was
frustrated by two wars,
mysteriously switched remains, Iraqi duplicity and a final tip from a young nomad in Anbar province.
Source :
http://news.yahoo.com/s/ap/20091128/ap_on_go_ca_st_pe/us_missing_pilot_hidden_in_sand Please explain to me the meaning of "frustrated by" and "mysteriously switched" in this context.