RIO DE JANEIRO, Brazil (AFP) — Rock band Aerosmith announced Tuesday it was cutting short its tour of South America after frontman Steven Tyler flew back to the US due to “unexpected medical issues.” “To everybody in South America – Brazil, Chile, Argentina and Mexico – I’m very sorry and feel like I’ve let you down,” the 69-year-old wrote in a statement posted on Twitter, which did not specify the nature of the illness. “I […]