On the (2,0) theory and 5D SYM

We will review the connection between the six-dimensional (2,0) theory and maximally supersymmetric Yang-Mills in five dimensions (MSYM). We will discuss the implications of a conjectured relation between the two, at all energy scales, for MSYM. We will also deconstruct MSYM from a four-dimensional circular quiver gauge theory and consider the possibility of instanton-solitons contributing to perturbative amplitudes.