TORONTO, Dec 19 (Reuters) - Canada's main stock index gained for the third straight session on Monday, with gold miners and telecom shares climbing as political tensions rose and bond yields declined.
The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE unofficially closed up 17.65 points, or 0.12 percent, at 15,269.85. Seven of the index's 10 main groups ended higher.