A 2004 film by Andrei Nekrasov looks at the September 9, 1999 apartment bombing in Russia.

http://video.google.com/videoplay?docid=7658755847655738553&q=disbelief

"Deploying all the suspense and drama of a sophisticated murder mystery, Nekrasov has created one of the most compelling and captivating films of the year” - 2004 Sundance Film Festival Catalogue

Synopsis from the official film site:

When Tatyana Morozova, a pre-school teacher happily married in Milwaukee, Wisconsin, learned that her mother had been killed and her sister Alyona had barely survived a middle-of-the-night blast that destroyed her old apartment building back in Moscow, she believed what she was told by the Russian government--that the attack was the work of Chechen terrorists.

But in the immediate aftermath of the attack she was more concerned about getting her shell-shocked sister over to America than about looking into the mystery of the serial apartment house bombings, that shook up Russia in September 1999.

Within a year, Alyona moved to the US and enrolled in a college, a stranger in a strange land trying to cope with nightmarish visions of her whole world collapsing around her on that fateful night.

In the meantime, the blasts triggered the war in Chechnya, propelled the hawkish ex-KGB spy Vladimir Putin to power and turned Chechens throughout Russia into despised and feared second-class citizens.

Immersed in their new lives in America, Tanya and Alyona initially discounted the rumor filtering out of Russia that it was not the Chechens, but the Russian secret service FSB that staged the bombings to help Putin win the elections.