Bremer also estimates that nearly 200 members of the extremist group Ansar al-Islam returned to the country on 1 May.
Furthermore, Bremer estimated that as many as 200 operatives from the extremist group Ansar al-Islam have slipped back into the country since May 1.
- square matrix of vertices where the elements of the matrix describe the edges - vertices will be listed in sorted order - e.g. binary adjacency matrix