US President Barack Obama welcomed a nuclear non-proliferation deal reached Friday at a UN conference but "strongly" opposed singling out Israel over talks for a Mideast nuclear weapon-free zone. "The United States welcomes the agreements reached at the 2010 Non-Proliferation Treaty (NPT) Review Conference to strengthen the global non-proliferation regime," Obama said in a statement. "This agreement includes balanced and practical steps that will advance non-proliferation, nuclear disarmament, and peaceful uses of nuclear energy, which are critical pillars of the global non-proliferation regime."