A minutes silence followed by the ringing of 26 bells was heard in Newtown, Connecticut, one week after a gunman broke into Sandy Hook Elementary school and shot 20 young children and six of their teachers.
More top news
The Oxford English Dictionary highlighted political youth movements worldwide - but what were the other words on the shortlist?
NHS standards body cites "serious" safety concerns over the procedure, saying it should only be used in research contexts.
The decision by the EU27 to progress to trade talks is expected to be little more than a formality.