The report is based on an in-depth investigation by the US senate, and was led by US Senator Dianne Feinstein, the chairwoman of the Senate Intelligence Committee.
Although many parts of the report are redacted, or have code names instead of countries, reporters and analysts have combined other information to glean details of which countries were actively supporting the US in its program of secret prisons around the world, where torture was allegedly carried out by the CIA on a routine basis.
There were levels of cooperation in the program. At the top were five countries with secret CIA-run prisons, including Afghanistan (4 sites), Poland, Lithuania, Romania and Thailand.
Several other countries ran proxy prisons, where suspects were routinely tortured on behalf of, and with the active cooperation of the CIA, who often rendered the suspects into their custody. They include Egypt, Syria, Libya, Pakistan, Jordan, Morocco, Gambia, Somalia, Uzbekistan, Ethiopia and Djibouti.
At the bottom of the list is a large group of countries which passively supported the suspected torture and known illegal rendition operations, including European countries such as Austria, Sweden, Finland, Denmark, Italy, Spain, Germany and the UK.
Neither Norway nor France participated in the secret rendition program, according to reports.