At least 26 people have been killed and hundreds more injured in the worst violence in Ukraine's post-Soviet history, according to the country's health ministry, which says the dead include 10 police officers and a journalist. The mayhem began as anti-government protesters clashed with security forces yesterday, and it continued overnight, with riot police making a fresh attempt to clear a central Kiev square in the early hours, reports the BBC, which witnessed police gain control of a corner of the square for the first time since December. As of 6am, a BBC correspondent reported "no sign these clashes will die down," calling the Independence Square area a "battle zone." The latest developments: