June 16 (Reuters) - Futures tracking Canada's blue-chip stocks edged higher on Tuesday as U.S. President Donald Trump said at the G7 summit that Washington's deal with Iran was going to the second stage, even as fundamental questions about the agreement remained unanswered.

June futures on the S&P/TSX index SXFcv1 were up 0.2% at 6:00 a.m. ET (1000 GMT).

• Doubts swirled around the interim deal to end the war in the Middle East as shippers said it could take weeks for confidence to return after any reopening of the Strait of Hormuz, and both countries said a permanent truce was yet to be negotiated.

• Oil prices slid to fresh three-month lows as markets weighed the prospect of renewed supplies against weak physical demand. O/R

• Spot gold XAU= and silver XAG= were up 0.8% and 0.5%, respectively, as worries about U.S. rate hikes eased. GOL/

• Canada's S&P/TSX Composite Index .GSPTSE hit a record high on Monday, led by metal mining shares, as global sentiment improved after news of the interim deal broke.

• Meanwhile, Canadian home sales rose 5.5% in May, making up some ground after a slow start to the typically active spring market, and prices edged lower, data from the Canadian Real Estate Association showed.

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