Liam Neeson and Orlando Bloom will star in an untitled pic based on Bill Carter's book "Fools Rush In."
Javier Bardem is in talks for a supporting role.
Brazilian helmer Andrucha Waddington ("Me You Them") will direct.
Carter wrote the book about the period of time when he lived and worked as an aid worker in Sarajevo during the bitter Balkans war siege that lasted 43 months.
Elliott Lewitt ("At Close Range") and Julie Kirkham are slated to produce. Bloom will also co-produce.