Dzhokhar Tsarnaev has gone on trial for his life over the Boston Marathon bombing, with his own lawyer bluntly telling the jury he did it - but arguing that he had fallen under the evil influence of his older brother.
Dozens of miners have been trapped underground and are feared dead after a blast at a coal mine in the eastern Ukrainian rebel stronghold of Donetsk, with rescuers saying the chance of finding many survivors was slim.
Microsoft co-founder and philanthropist Paul Allen and his research team have found a massive Japanese Second World War battleship off the Philippines near where it sank more than 70 years ago, his representatives said.
Iraqi troops and Shia militias have battled against Islamic State (IS) south of the militant-held city of Tikrit, though roadside bombs and suicide attacks slowed their advance on Saddam Hussein's hometown.
Thousands of mourners and dignitaries have filed past the white-lined coffin of murdered Kremlin critic Boris Nemtsov, many offering flowers as they paid their last respects to one of the most prominent figures of Russia's beleaguered opposition.