Tens of thousands of Morsi backers rally TENS of thousands of Islamists have poured onto Egypt's streets demanding the reinstatement of ousted president Mohamed Morsi, despite warnings by the military of a crackdown on violent protests. Friday's rallies come a day after Morsi's army-installed successor Adly Mansour vowed to fight for stability against opponents he accused of wanting to plunge the crisis-hit country "into the unknown." A vast crowd gathered at Cairo's Rabaa al-Adawiya mosque, where Morsi's supporters have camped out since the military overthrew him on July 3. About 10,000 protesters then set off in the direction of the Republican Guard headquarters, scene of deadly clashes last week, carrying pictures of the deposed president and chanting slogans. But they were blocked by soldiers and armoured vehicles. "Islamic, Islamic," they shouted, of their hopes for an Islamic state, as fighter jets flew overhead and military helicopters whirled in the sky. I believe Morsi will return as president, God willing. The people will win in the end," said a man who gave his name as Mohammed, 45. Smaller rallies took off elsewhere in Cairo, second city Alexandria, and other towns across Egypt after Morsi's Muslim Brotherhood had called for a day of protests dubbed "Breaking the Coup." Mansour, in a speech on Thursday night, pledged to rein in those who wanted to push Egypt "into the unknown." We will preserve the revolution," he said, in comments echoed by the army. Although mostly peaceful, the pro-Morsi protests have resulted in deadly clashes, with the unrest claiming more than 100 lives in all, according to an AFP tally. In the bloodiest single incident, at least 53 people died, mostly Morsi supporters, during clashes with soldiers outside the elite military barracks where they believed Morsi was being held. The military on Thursday warned it would decisively confront any violence in the protests. "Whoever resorts to violence in Friday's protests will endanger his life, and will be treated with utmost decisiveness, within legal bounds," it said on Facebook. Separate rallies were also planned for later on Friday by anti-Morsi activists in Tahrir Square and outside the presidential palace, raising the possibility of violence in the capital. In his speech, Mansour offered an olive branch to the Brotherhood, saying: "The framework of justice and reconciliation extends to all." The movement has categorically refused to recognise Mansour's caretaker government, sworn in this week but with Islamist parties and movements totally absent. Another major challenge facing Egypt's new government is the security situation in the restive Sinai peninsula, which has witnessed a surge in violence in the past two weeks. The military began deploying reinforcements on Tuesday, with numerous members of the security forces killed and wounded in drive-by shootings and rocket attacks by suspected Islamist militants. Three policeman died in separate attacks in north Sinai on Wednesday night and another was shot dead on Thursday, according to security sources, while the armed forces have killed ten jihadists since launching their latest operation. Britain on Friday announced it was revoking export licences for equipment used by Egypt's military and police amid concerns it could be used against protesters