Ukrainian Prime Minister Denys Shmyhal was in Poland on Thursday for talks with his counterpart Donald Tusk to address Polish and western European farmers' demands that regulations be applied to the cheap Ukrainian food imports that they say are undercutting their livelihoods.

Farmers in many countries have been staging vehement protests against the imports and tensions have grown between Kyiv and its staunch ally Warsaw over the tax-free inflow of Ukraine's farm produce.