STOCKHOLM, May 15 (Xinhua) -- The Secretary General of the United Nations has asked the Swedish prime minister to send troops to Darfur as part of a future peace-keeping mission, Radio Sweden reported on Tuesday.

    After meeting with Ban Ki-moon in New York on Monday, Fredrik Reinfeldt said neutral Sweden is considering whether it could create a unit with Norway to send to the Sudanese province.

    But he said they would need to see what the force would look like, what the security situation would be and who would be leading the mission.

    The Swedish prime minister is meeting American President George W. Bush in Washington Tuesday as he continues his brief tour of the United States.

    He will try to persuade the president to step up efforts to slow global warming and also plans to detail Sweden's efforts to break its dependence on oil and reduce greenhouse gas emissions, according to the Swedish broadcaster.