Did Big Pharma Partner With BIg C.I.A To Get OFF The Books Money

Afghanistan accounts for 90% of the worlds opium. Why did the war in Afghanistan drag out for so long what really happened during the battle of tora bora? Was this all an effort for the C.I.A To Get off the books money to fund programs not approved by congress and entirely unknown to anyone out side of the loop? maybe all these dots are just coincidences.