The best documentaries really do offer you an insight into something you have never seen before and probably never would have had the opportunity to see into without it, and offer you a different point of view or challenge whichever viewpoint you have. The Gatekeepers looks set to do all those things for the trailer presents a powerful and potentially controversial documentary from the opening.

The film, showing at this year's Glasgow Film Festival, interviews former heads of the Israeli secret service also known as Shabak, the Israeli Security Agency (ISA) or Shin Bet, talking about the actions they took, the decisions they made and their insights into the region.

Already, just from that opening you should be interested, for The Gatekeepers is going to offer you access to people who you never would have imagined you would have heard from and the trailer shows that each of them have different views. More than that, they will be discussing some of the operations they ran and some of the events that happened while they were in charge of the organisation.

Here's the official blurb for The Gatekeepers:

Charged with overseeing Israel's war on terror-both Palestinian and Jewish- the head of the Shin Bet, Israel's secret service, is present at the crossroads of every decision made. For the first time ever, six former heads of the agency agreed to share their insights and reflect publicly on their actions and decisions. The Gatekeepers offers an exclusive account of the sum of their success and failures. It validates the reasons that each man individually and the six as a group came to reconsider their hard-line positions and advocate a conciliatory approach toward their enemies based on a two-state solution.

The trailer looks powerful, dramatically both visually and through the words of these people. I'm really excited about seeing The Gatekeepers, fingers crossed I get tickets.

You can see the trailer over at Apple Trailers and below through TrailerAddict:

The trailer itself is powerful and promises a lot for the film, and the style of the non-talking head footage is engaging and exciting as well. It's definitely a film to see.