He was referring to the showdown at the beginning of the year when a price dispute between Ukraine and Russia and a two-day embargo caused jitters across Europe , which relies on Russian gas , especially in the winter .
Europe /location/location/contains Russia
Europe /location/location/contains Ukraine
PRP VBD VBG TO DT NN IN DT NN IN DT NN WRB DT NN NN IN NNP CC NNP CC DT JJ NN VBD NNS IN NNP , WDT VBZ IN JJ NN , RB IN DT NN .
Europe
LOCATION
Russia
LOCATION
/location/location/contains
Europe
LOCATION
Ukraine
LOCATION
/location/location/contains