Egypt braces for 'million march' in Cairo

A massive demonstration is due to be held in Cairo as protesters step up their efforts to force President Hosni Mubarak from power.

Organisers say they hope one million will come onto the streets in what is expected to be the biggest show yet. A rally is also planned in Alexandria.

Egypt's powerful army has vowed it will not use force against the protesters.

Jon Leyne reports from Cairo.