Canada's Centerra Gold CG.TO said on Sunday it had initiated binding arbitration against Kyrgyzstan government, after the parliament passed a law allowing the state to temporarily take over the country's biggest industrial enterprise, the Kumtor gold mine operated by Centerra. May 17 (Reuters) - Futures for Canada's main stock index fell on Monday, tracking weakness in crude prices, while sentiment across global markets was subdued on inflation pressures. The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE ended 1.21% higher at 19,366.69 on Friday.