Zimbabwe's President Robert Mugabe has made his first public appearance since the country's army took over on Wednesday. <br/><br/>He attended a graduation ceremony in the capital, Harare. Mr Mugabe had been under house arrest for days. <br/><br/>The appearance comes during an extraordinary series of negotiations with regional leaders over Mugabe's departure after 37 years in power. <br/><br/>The military is taking pains to show respect for the 93-year-old leader, the world's oldest head of state, by referring to him as the president and the commander-in-chief.<br/><br/>Today's event appears to allow Mugabe to project the image of leadership, even as calls for his departure grow stronger. <br/><br/>Zimbabwe's military says, it is continuing talks with President Robert Mugabe for his departure while it pursues those who are close to the leader and his wife.<br/><br/>The Zimbabwe Defence Forces said significant progress has been made in their operation to weed out criminals around President Mugabe, adding that they had arrested some although<br/>others are still at large. <br/><br/>The military said that it is engaging with Mr Mugabe and would advise the public on the outcome of talks as soon as possible.