Iran buys about 400,000 T wheat from Russia and EU -trade

(Adds detail from paragraph two) By Michael Hogan and Jonathan Saul HAMBURG/LONDON, Feb 7 (Reuters) - Iran's state grains buyer GTC has purchased about 400,000 tonnes of wheat to be sourced from Russia and the European Union including Germany, European traders said on Friday. The purchase provides another sign of large food buying by Iran after a deal last year to relax Western sanctions. "I ...