Find out why the Hulk is smashing Iron Man in the newest Avengers: Age of Ultron clip

We know that the upcoming Avengers: Age of Ultron pits the Hulk against Iron Man — appropriately wearing his supersized Hulkbuster armor — but until now, we didn't know why the two colleagues were fighting. Be aware that the clip below, which features fantastic footage of The Hulk and Tony Stark tussling through city streets, contains mildly significant spoilers for Age of Ultron. The clip corroborates fan theories that the Hulk is under the sway of a nefarious third party.

via Tech News Headlines - Yahoo News http://www.theverge.com/2015/4/12/8396763/avengers-age-of-ultron-clip-why-iron-man-hulk-fight