Violent clashes take place in the Polish capital Warsaw as rival groups rally on the country's Independence Day.

Penn State assistant football coach Mike McQueary, who witnessed alleged sexual abuse, is barred from the team's final home game.

Vladimir Putin vigorously defends his decision to stand in next year's Russian presidential election, denying it is a quest to retain personal power.

US President Barack Obama has gone to Hawaii, where this weekend he is hosting leaders from Asia Pacific countries at the annual Apec summit.

Dozens of medical marijuana dispensaries in California have been ordered to close from Saturday, as a federal crackdown looms.

Baseball player Wilson Ramos, who plays for the US Major League Washington Nationals team, is found in Venezuela, where he was kidnapped two days ago.

Data on changes to oceans' sea surface temperature can help predict the severity of Amazon fire seasons, a study suggests.

Italy's lower house of parliament is to vote on austerity measures demanded by the European Union, which should pave the way for PM Silvio Berlusconi to resign.