Poland will likely cut financial support to the million Ukrainian refugees it is hosting, the government said, in a move that may further undermine ties with its neighbour that have been strained in a clash over grain imports. While the government in Warsaw has been one of Ukraine’s most ardent supporters in war against Russia, offering financial and military aid and serving as a gateway for western supplies, ties between the two nations are deteriorating in the runup to Poland’s elections.The support for refugees — which includes waiving...