Putin ordered plane to be downed in 2014
Russia's President Putin ordered the shooting down of a passenger plane that was reportedly carrying a bomb and targeting the opening of the 2014 Sochi Winter Olympics, he says in a new film.
In the two-hour film, posted online, Mr Putin says he was told a plane from Ukraine to Turkey had been hijacked as the Games were about to start.
It was found to be a false alarm, he says. The plane was not shot down.
The film comes ahead of an election he is expected to win on 18 March.
Mr Putin faces seven challengers but none are expected to attract widespread support and the most prominent opposition leader, Alexei Navalny, has been barred from standing.
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"I was told: a plane en route from Ukraine to Istanbul was seized, captors demand landing in Sochi," Mr Putin says in the film, Reuters reported.
The pilots of a Turkish Pegasus Airlines Boeing 737-800, flying from Kharkiv to Istanbul with 110 people on board, said a passenger had a bomb and had told them to divert the plane to Sochi, reporter Andrey Kondrashov says.
In the film, Mr Putin says security officials told him that the emergency procedure in such a situation was to down the plane.
"I told them: act according to the plan," Mr Putin says.
Minutes later he received another call informing him that it was a false alarm, he says.
He arrived at the Olympic venue in Sochi with Olympic officials shortly afterwards, he says.
Kremlin spokesman Dmitry Peskov has confirmed Mr Putin's account, Reuters reported.
The first part of the documentary, entitled Putin, has been posted on social media accounts, including one belonging to key state media manager and commentator Dmitry Kiselyov, and a pro-Kremlin YouTube account.
Incredulity at Crimea question
During the film Mr Putin was asked by interviewer Mr Kondrashov - a top state TV presenter and currently Mr Putin's election campaign press secretary - if there were any circumstances in which he could envisage returning Crimea to Ukraine.
"What are you talking about? Such circumstances do not exist and never will," Mr Putin said. Russia's Tass news agency reported his remarks.
Russia annexed the peninsula from Ukraine after the country's pro-Russian leader was overthrown in 2014.
Last September the UN accused Russia of committing "grave human rights violations" in Crimea.
In the film, Mr Putin says that he may forgive some things, "but not everything".
When asked by Mr Kondrashov to clarify what cannot be forgiven, the Russian leader says: "Betrayal."
However, Mr Putin says he has not yet had to deal with "serious events that can be called betrayal".
"Maybe I have chosen people who are not capable of doing such a thing," he says.
Grandfather 'cooked for Stalin'
The Russian president's paternal grandfather worked as a chef for the former leaders Vladimir Lenin and Joseph Stalin, Mr Putin says.
Spiridon Putin was a highly regarded member of Stalin's staff, Mr Putin says.
"[He] was a cook at Lenin's and later at Stalin's, at one of the dachas in the Moscow area," Mr Putin says, Reuters reported.
Spiridon Putin continued to cook for the Soviet establishment until not long before his death in 1965 at the age of 86, the film says.
Dose of admiration
Analysis by Sarah Rainsford, BBC News, Moscow
The Kremlin wants the highest possible turnout at next week's election to give "Putin 4" fresh legitimacy.
This two-hour hagiography is part of that. It seems crafted to fill Russians with admiration and ensure they head out to vote. The film presents Vladimir Putin as strong and focussed. But he's caring, too, filmed with lots of big close-ups, cheeky smiles and hints of emotion.
The key lines, though, come at the very start: the idea that the West will never put Russia in its place, Crimea will never be returned and Russia's president is not someone to be messed with.
There's also a stress on his appeal to the young, via adoring interviews with teenagers born on the day he came to power. As for the handling of the 2000 Kursk submarine tragedy, Putin is now cast as decisive and humane - far from the harsh image he projected at the time when he smirked at a question on the fate of the Kursk, and said "it sank".
But at the heart of it all is a story of how a strongman hero 'saved' a country from ruin. In that, it underlines how Putin inherited a military in tatters and developed a force that Russians can be proud of, and the world has to reckon with once again.