The subscription sites listed below provide comprehensive background information related to corruption and fraud on firms or individuals, such as media reports, litigation records and debarment lists, which can be used by to determine if the parties are Politically Exposed Persons (PEPs) or other wise present a corruption or fraud risk.
risk.lexisnexis.com/worldcompliance
Dowjones.com/products/risk-compliance
Ocr-inc.com (Global trade compliance site: good coverage of international watch list)