The Japanese government has drawn up an outline of measures it will take at home and overseas in the event the United States goes to war with Iraq, according to government sources.

The plans call for protecting Japanese nationals, aiding refugees and surrounding countries, preventing economic turmoil in Japan and other countries and possibly aiding Iraq in its rebuilding process.

At the same time, security in Japan will be stepped up at nuclear power stations, airports and seaports in light of the possibility of terrorist attacks, the sources said. Measures will also be taken to prevent attacks against U.S. military sites and U.S.-related facilities in Japan.