In pictures: Nato summit violence

1 of 6 A heavy police presence on the streets of Istanbul is one element of a massive security operation for the Nato summit that also included armed forces on land and at sea.

2 of 6 Police use batons, tear gas and water cannon to stop protesters getting near the conference hub.

3 of 6 Demonstrators hurl Molotov cocktails, stones and petrol bombs at security forces, and block roads by overturning cars.

4 of 6 Some protesters light barricades in the streets.

5 of 6 Many residents remain inside their homes as the streets become a battleground.

6 of 6 Some protesters are detained by police during the violent protests.