Deputy Secretary of State Richard Armitage said Friday the United States will propose by July a new plan to curb global warming, which will differ from the Kyoto Protocol, by seeking the participation of developing countries, as well as industrialized nations.

Armitage outlined the proposal in a meeting with a delegation of the Japanese government and ruling coalition, which traveled to Washington to urge the U.S. to remain committed to the Kyoto Protocol after President George W. Bush's announcement that he is pulling out of the landmark 1997 treaty.

According to delegation members, Armitage said Washington will come up with the new framework in time for an international conference on global warming to be held in Bonn, Germany, in July.

The U.S. is looking for a new approach that covers all nations, Armitage was quoted as saying. He repeated Bush's recent comments opposing the pact, which was negotiated and signed in December 1997 to expedite international efforts to reduce heat-trapping carbon dioxide.