Part of the answer to this question that starts out opinion piece:
How and why did European states willingly engage in processes that involved torture and breached the most clear and absolute of international laws?
Is easy to answer, money and favors promised and given to do ones wants. Nobody has ever mentioned, nor to my knowledge even asked, how much we, the United States, ponied up to get these favors from the countries the CIA set up in, as well as to those that the CIA didn't use but bought into supporting the extreme failed policies set by us through our hired leaders in DC, added to the borrowed billions and billions for the costs of these wars of choice. Another would be doing so in the countries where torture and inhumane treatment isn't done for information, rarely works, but to maintain power over a populace with extreme fear!
April 30, 2012 - THE MORE WE learn about the past decade of extraordinary rendition, the clearer it becomes that it would not have been possible without active engagement by European states.
Adopted in earnest by the Bush administration in the wake of the September 11th attacks, “extraordinary rendition” was a programme of irregularly transferring individuals across borders for the purposes of interrogating them while they were being held incommunicado without access to legal counsel or any means of challenging the detention.
Reports suggest that people were “snatched” from locations as diverse as their bedrooms in Bosnia Herzegovina, market squares in Pakistan, and city streets in Milan. They were bundled into cars, blindfolded, transferred on airplanes (often chartered civilian aircraft), and subjected to prolonged periods of interrogation and abuse, including torture, in their destinations. Extraordinary rendition was and is clearly and unquestionably illegal under international law as a breach, among other things, of the absolute prohibition of torture.
Initial reports of extraordinary rendition suggested that the participating states were mostly those where torture was known to have been a widespread tactic of state forces. Thus, we heard of transfers to Egypt, Syria and Uzbekistan among others. read more>>>