Syrian opposition rejects Bashar al-Assad's offer of 'national dialogue' The Syrian president, Bashar al-Assad, addresses supporters at the Opera House in Damascus. Photograph: Sana/EPA Syria's opposition and its international backers have rejected Bashar al-Assad's latest initiative to end violence, insisting that he offered no meaningful concessions after 21 months of bloodshed and must surrender power at once. Hopes for a breakthrough in the crisis were dashed after an hour-long speech in Damascus in which the Syrian president called for "a war to defend the nation" against "terrorist" violence and urged foreign countries to stop supporting his enemies - while offering a national dialogue and a constitutional referendum. Assad proposed what he called a "comprehensive plan" that included an "expanded government." "I will go one day, but the country remains," he pledged. Syria was not facing a revolution but a "gang of criminals" and "western puppets," he said. "We are now in a state of war in every sense of the word," the president told cheering supporters. The speech from the stage of the Damascus Opera House in the heart of the capital was punctuated by thunderous applause and loyalist chants from what was certainly a carefully selected audience. Internet services were disconnected. But it was hard to see how his latest address - the first in seven months - offered even a faint glimmer of hope of way out of the bloody impasse between the regime and rebels in a conflict which the UN said last week had claimed 60,000 lives. The opposition Syrian National Coalition said the closely watched address marked an end to diplomatic efforts led by the UN mediator Lakhdar Brahimi. "The appropriate response is to continue to resist this unacceptable regime and for the Free Syrian Army to continue its work in liberating Syria until every inch of land is free," said George Sabra, its deputy president. Earlier David Cameron repeated the call for Assad to step down. Egypt's president, Mohamed Morsi, told CNN that he supported calls for Assad to be tried for war crimes. His last public speech was in June 2012. Opposition media described clashes taking place between government and rebel forces near the Yarmuk refugee camp as well as anti-Assad demonstrations in Qadam and Homs. In all 52 people were reported killed, according to the Syrian Observatory for Human Rights, a UK-based monitor. Rami Khouri, a commentator for Lebanon's Daily Star, tweeted: "Assad speech appropriately made in Opera House. It was operatic in its other-worldly fantasy, unrelated to realities outside the building. Reconciliation could take place only with those "who have not betrayed Syria," the president declared, repeating that the government had no "partner" for peace. There was loud cheering when he praised the bravery of the Syrian armed forces. Assad said that a "national dialogue" would draw up a new charter that would be put to a national referendum that would be followed in turn by parliamentary elections and a general amnesty. But Turkey's foreign minister, Ahmet Davutoglu, thought Assad had simply repeated empty promises. "As Assad no longer has the representative authority over the Syrian people, his words have lost persuasiveness," he said. A transition period needs to be completed swiftly through talks with representatives of the Syrian nation. In Brussels the EU foreign affairs chief, Cathy Ashton, promised to "look carefully" at the speech, but added: "We maintain our position that Assad has to step aside and allow for a political transition." Opposition reactions were scathing. Colonel Riad al-Asaad of the FSA commented: "Assad speech business as usual. Death, destruction, starvation, detention, rape, torture, displacement ... struggling to find the positive bits. Another opposition supporter tweeted: "There is a saying in Arabic that goes along the lines of 'he killed the man then walked in his funeral procession.'" A video clip of the event posted by opposition media dubbed the soundtrack of the speech so that Assad barked liked a dog and the audience bleated and brayed like farmyard animals. In his speech, Assad thanked Russia, China and Iran for supporting Syria in the face of hostility from the US, Britain and France. "Syria is impervious to collapse and the Syrian people impervious to humiliation," he concluded. We will always be like that. Hand in hand we will move ahead, taking Syria to a brighter and stronger future.