1.   An environmental protocol that was to be added to the Antarctic Treaty will go into effect only after all treaty nations ratify it.

2.   In addition, Britain and Switzerland have not signed the treaty, and laws regarding residency, asylum and naturalization vary between treaty nations.

3.   In Brasilia on Tuesday, Peruvian negotiators rejected cease-fire proposals submitted by Ecuador to ambassadors of the four treaty guarantor nations.

4.   A related document would establish a more rigorous, regular system of international meetings to review how well the treaty nations pursue those goals.

5.   She suggested that representatives of the treaty nations and a team of experts go to Cuba to see what happened.

6.   The conference will devote most of this week to position statements by representatives of treaty nations, including U.S. Vice President Al Gore on Wednesday.

7.   The other treaty nations are France, Germany, Belgium, Netherlands, Luxembourg, Italy, Spain, Greece and Portugal.

8.   With growing pressure from research teams, tourists and would-be mineral explorers, the treaty nations agree that more safeguards were needed.

9.   With growing pressure from research teams, tourists and would-be mineral exploration, the treaty nations agree that more safeguards were needed.

10.   The fifth freedom is the right of foreign airlines to carry revenue traffic between any points of landing on flights between three or more treaty partner nations.