Amid talks over inclusion of China in new deal, US negotiator says 'we do remain far apart on a number of key issues'

Jerusalem hails diplomatic achievement as Brussels ratifies pact with large majority; left-wingers' bid for delay rejected; EU to watch political developments, 'act accordingly'

Top security agency officials said to hold talks on possible test ahead of negotiations with Beijing and Moscow over weapons treaty

US president says Moscow has not stuck to commitments under 18-year-old pact designed to improve military transparency and confidence between the superpowers