Pakistan braced for Imran Khan anti-government marches
13 August 2014 Last updated at 16:46 BST
Tens of thousands of security personnel have been deployed in the Pakistani capital Islamabad ahead of an anti-government march, led by the opposition politician Imran Khan.
He is calling on the Prime Minister Nawaz Sharif to resign over allegations of electoral fraud in last year's national election.
The Government has in turn accused Mr Khan of trying to derail democracy.
The BBC's Shahzeb Jillani reports from Islamabad.