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.

Meanwhile, new Vice President Omar Suleiman says he will hold cross-party talks on constitutional reform.

Mubarak reshuffled his cabinet on Monday to try to head off the protests, replacing the widely despised Interior Minister Habib al-Adly.

But correspondents say that the army's statement has been a major blow for President Mubarak, and appears to have encouraged protesters.

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