Warsaw and Kyiv have agreed to speed up the transit of Ukrainian cereal exports through Poland to third countries, a first step towards resolving their “grain war”. It is the first breakthrough since the start of a diplomatic spat between the two allies that was triggered when Poland slapped a ban on imports of Ukrainian grain. The populist government in Warsaw, which faces a general election on October 15, said the embargo was designed to protect local farmers against a collapse in cereal prices.