Siege: The Cabal # 1 (Dec 2009)
by themimegogo
This one shot heavily revolves around Norman Orsborn's boardroom problems with the Cabal. Since I ONLY collect issues with Taskmaster in them, I get glimpses of what's happening.
From what I gather, Namor and White Queen, broke off from the Cabal not too long prior to this issue. The comic opens with Norman trying to reason with Doctor Doom to stay loyal to their alliance since he was not happy with the break up. Doom was also clearly unhappy with Norman bringing Taskmaster into this circle.
The whole thing ends in conflict prompting Norman to bring in his "Anti Dr. Doom contingency plan" which happens to be Void. Taskmaster gets caught in the crossfire and gets taken out no more than 1/3 of the way into the issue.
Prior to purchasing this comic, I already saw part of these events unfold from Taskmaster's perspective. In my Siege: Avengers The Initiative TPB (#31 - 35) - It was shown how Norman invited Tasky into the Cabal, where he reluctantly agreed to join... only to be blasted by Doctor Doom during the confrontation. More of his fate after this issue was covered there.