OPEC summit to back climate change fight

---

RIYADH, Nov 16 (Reuters): OPEC will back the fight against global warming at a heads of state meeting this weekend and affirm its commitment to "stable, competitive" oil prices, according to the summit's draft declaration.
The group "shares the international community's concern that climate change is a long-term challenge", according to the statement read over the telephone by an OPEC delegate. OPEC also seeks "stability of global energy markets", it says.
Leaders arriving for the summit, which opens at 1600 GMT, include Iran's President Mahmoud Ahmadinejad and Venezuelan President Chavez.