Imran Khan has started his march from Islamabad to Southern Waziristan, a dangerous tribal area of Pakistan currently the target of CIA drone attacks.
The march has been denounced by various Pakistani Taliban factions, but Khan insisted it would go ahead:
This is a peace march, an effort for peace in Pakistan on our part ... We are not going to fight anyone.
More top news
A four-year-old boy is among 20 people to have died in some of the worst flooding West Virginia has seen.
The heavy showers will ease off this weekend.
Labour MPs are attempting to build a consensus for a single challenger to Corbyn, while the big game in the Tory Party is Stop Boris.