Police clash with protestors ahead of Nato summit

Police held back protesters with tear gas and detained two dozen people in a pre-dawn clash before a summit of leaders of 28 Nato nations today on the French-German border.

Some 1,800 protesters left their camp in the south of the French city of Strasbourg at about 4am and headed north through deserted streets to the summit site, watched from above by several police helicopters shining searchlights.