how living near major roads could put you at higher risk of developing dementia. and six letters from princess diana to a buckingham palace steward are sold at auction for more than £15,000. and coming up in sportsday on bbc news, sir andy murray s through to the qatar 0pen semi finals after beating spain s nicolas almagro. he ll face eitherjo wilfried tsonga or tomas berdych in the last four. good evening. american intelligence officials have given a stark warning about the threat posed by russian cyber attacks. the outgoing us national intelligence director, james clapper, told a senate hearing he hasn t come across a more aggressive campaign to interfere with an american election than russia s actions in last year s race for the white house. mr clapper who will brief donald trump about his findings tomorrow said the hacking of democratic party emails had been ordered by the kremlin. washington is investigating what could be the biggest political break in since waterga
given their most explicit warning yet about the threat, as they see it, from russian cyber attacks to the united states and beyond. they insist there s no doubt russia tried to interfere with the us presidential election, although they ve stopped short of calling it an act of war. they will brief donald trump on friday. the president elect is unconvinced, so far, about moscow s involvement, and the kremlin denies it. nick bryant reports. washington is investigating what could be the biggest political break in since watergate. in the ‘70s, it was the building belonging to the democratic national committee that was burgled. in 2016, it was the computer system at the party s present headquarters. a robbery in cyberspace, rather than in person. and us intelligence believes it was orchestrated by vladimir putin, from the kremlin, to help donald trump win the election. i want to welcome all our members back to the committee. today, those allegations were aired publicly on capitol