We speak to Ewa Ewart, the director of a documentary about the Smolensk tragedy which killed President of Poland Lech Kaczynski a year ago.

The programme - Tragedy in Smolensk - a Polish version of which was aired on the private TVN channel last week, asks what went wrong on the plane one year ago and how has the tragedy changed Poland's relationship with Russia?

Ewa Ewart is speaking to reporter Ela Krajewska. (pg)