<sod >Plumes of smoke and tear gas filled the air in the capital and stun grenades boomed, as thousands of angry anti-government protesters clashed two days after the government and the opposition reached an unstable compromise that saw jailed activists released.< eod>< sod > Speaking on the square known locally as the Maidan, Klitschko urged women and children to leave the area, saying: "We cannot exclude the possibility of use of force in an assault on the Maidan." Earlier, plumes of smoke and tear gas filled the air in the capital and stun grenades boomed, as thousands of angry anti-government protesters clashed two days after the government and the opposition reached an unstable compromise that saw jailed activists released.< eod>