Compounds capable of, or usable in, inducing death of cancer cells and/or modulating a biological activity of a chemokine e.g., cell migration, and/or treating diseases and disorders associated with a biological activity of a chemokine and/or cell migration, and/or inhibiting a kinase and/or in treating a disease or disorder associated with an activity of a kinase, such as cancer and inflammatory diseases and disorders, are provided herein. The compounds are collectively represented by Formulae (Ia) or (Ib): wherein A, B D, E, G and R1-R5 are as defined in the specification.