AIT continues to be a mainstream idea

Pulitzer prize winning author Jared Diamond writes (2005, p. 14):
"Essentially the same question has been debated for the fall of the
Khmer Empire centered on Angkor Wat in relation to invasions by Thai
neighbors, for the decline in Harrapan Indus Valley civilization in
relation to Aryan Invasions, and the fall of Mycenaean Greece and
other Bronze Age Mediterranean societies in relation to the invasions
by Sea Peoples."
Diamond's book is about the fate of past and current societies and the
reasons for their decline. Interestingly, the fictional story of an
"Aryan Invasion" finds a place among well recorded and verified
historic events!
Diamond, Jared (2005), Collapse: How Societies Choose to Fail or
Succeed, New York: Viking (Penguin Group).

M. Kelkar