Terrorism

1. What

1.1. What are the common methods?

1.2. New node

2. Where

2.1. Where does it occur?

2.2. New node

3. Why

3.1. Why does it occur?

4. When

5. Who

5.1. Who is likely to...

5.2. Who are affected...

5.3. Who are the targets?

6. How

6.1. New node