Yemen's protesters clashed with pro-government forces Monday during a sit-in at Sanaa University in the fourth straight day of unrest in the country. Protests have been on-and-off for weeks now and conciliatory gestures from the government, most notably a promise from President Ali Abdullah Saleh that he would not run for reelection in the 2013 presidential elections, have , the New York Times reported. On Sunday, more than 1,000 people turned out in the streets of the capital in a seemingly leaderless event that bore similarities to Egypt's mass uprisings.