KYIV (Reuters) – Romanian farmers blocked a crossing on the Romanian-Ukrainian border on Thursday, Ukraine’s state customs service said. Farmers and hauliers have been blocking highways and slowing traffic with convoys of tractors and trucks in protest against the high cost of diesel, insurance rates, European Union measures to protect the environment and pressures on the domestic market from imported Ukrainian agricultural goods. The protesters want a moratorium on loan repayments, faster subsidy payments and separate lines at border crossings and the Black Sea port of Constanta for EU lorrie…