Blazars (VLBA & Glast)

This review paper discusses the past and present observations of gamma-ray blazars with both space and ground-based gamma-ray telescopes (such as EGRET and current TeV telescopes), and with the VLBA. I also discuss the more sensitive gamma-ray telescopes such as AGILE and GLAST that will become available over the next several years, and how observations with these telescopes, together with improved VLBA observations, can increase our understanding of blazar physics.