Egypt\'s interim President Adly Mansour has vowed to \"preserve the revolution,\" and protect the country from those who seek chaos and violence. In his first public address, Mansour warned that he would \"battle for security to the end,\" as Islamists planned new protests against his army-installed interim government. \"We are at a decisive moment in Egypt\'s history, which some want to steer into the unknown,\" he said in a pre-recorded speech. \"We will fight the battle for security to the end. We will preserve the revolution.\" Mansour, Egypt\'s top judge, was appointed caretaker leader after the military\'s overthrow of elected president Mohammed Morsi on July 3. Two weeks on, he once again offered an olive branch to Morsi\'s Islamist supporters. However, he also pledged \"transitional justice,\" amid calls for the prosecution of Morsi and a crackdown on his Muslim Brotherhood movement. \"The framework of justice and reconciliation extends to all,\" he asserted. The Muslim Brotherhood has refused any dealings with Mansour and said it will keep up its protests until Morsi is reinstated as president. It called for fresh rallies on Friday, with anti-Morsi groups planning counter-demonstrations.