HARDtalk is in the Zambian capital Lusaka to speak to Kenneth Kaunda. Leader of the struggle for independence, he was sentenced to hard labour in prison by the British before he went on to become Zambia's first president of the post-colonial era. It is a landmark year for Zambia, the 50th anniversary of its independence, and Kenneth Kaunda himself turns 90 in April 2014. What has 50 years of freedom brought the people of Zambia?