The article, is quite well researched.
In brief, it concludes, that the modern State of Haryana, constituted
the area of Kurukshetra since very ancient times and this area was
where the vedic culture evolved.
Migrations were away from this area, both east and West.
The Indus( Sindu) valley is not too far off. the Sarsvati also flowed through Kurukshetra
The areas of Gandhar etc are alos discussed
From a jat perspective, we may take note of clan names, like
Karaskara, Aratta, ( later Rat-hi)
etc
List members may be interested in reading the article below:
Vishal Agarwal, "Is There Vedic Evidence for the Indo-Aryan
Immigration to India?", Dialogue (Journal of Astha Bharati, New
Delhi), vol. 8, No. 1, July-September 2006, pp. 122-145.
http://www.omilosmeleton.gr/english/documents/VedicEvidenceforAMT.pdf