<sod >Ukraineâs law enforcement agencies has set a deadline for protesters to end street clashes with police in Kiev by 6pm (1600 GMT), and vowed to restore calm if âdisorderâ does not stop.< eod>< sod > Following the deaths, Ukrainian opposition leader Vitaly Klitschko made an impassioned plea to President Viktor Yanukovich not to send in police to break up a peaceful protest on Kiev's Independence Square, after a 6pm (1600 GMT) deadline for protesters to end street clashes with police set by Ukraineâs law enforcement agencies passed.< eod>