'Significant' step by America

WASHINGTON/COPENHAGEN – The United States took a step yesterday towards curbing its greenhouse gas emissions, boosting the start of negotiations between 190 countries in Copenhagen on a deal to combat global warming. – Page 11

Protesters clash with police

TEHRAN – Iranian security forces fired warning shots in Tehran yesterday and beat opposition protesters among thousands seeking to renew their challenge to the government six months after a disputed election, witnesses said. – Page 12

Day of mourning declared

PERM, Russia – Flags flew at half mast and entertainment programmes were cancelled across Russia yesterday as the country mourned 113 victims of a weekend nightclub inferno caused by sparks from a firework show. – Page 48