European stocks fell 0.17%, paring earlier gains. (EPA Images pic) LONDON: Global shares fell and oil prices got a boost on Friday after US and Iranian negotiators called off peace talks, while the risk of official Japanese intervention mounted as the yen traded on the brink of a 40-year low. The US dollar headed towards its strongest weekly gain in a month, mostly at the expense of the yen, which has fallen for five out of the last six weeks to…