What does "bone-dry bed of reality" mean? Is that a set expression or there are even more than one embedded? In Urbandictionary.com I found that "bone-dry" is "mundane" but the rest remains unclear.
The context surrounding it: "
And let's not forget that the CIA isn't the only organization with questionable people on its payroll. Since the beginning of the war, NATO has been bribing drug smugglers to let fuel pass through the Khyber Pass from Pakistan into Afghanistan. NATO payments, thousands of dollars for each truck, have to dwarf anything the CIA is giving to Ahmed Wali Karzai.
You can take it to the bank that the CIA knows all of this, just as it knew in the early '60s that Diem's brother was a corrupt thug. You can also be certain that the CIA would prefer to have untainted sources. But the bone-dry bed of reality in Afghanistan is that there are few if any to be had. In that country, you survive by renting clans, tribes and narcotics dealers, which comes with their unsavory business whether you like it or not.