Even before these latest findings, the 142 nations that are parties to the 1992 treaty had opened negotiations on stronger emissions-reduction measures.

Other nations did not open their doors to German Jewish refugees.

But if this nation of 22 million is opening its door, it is opening it just a crack.

Both nations have opened and developed cross-border trade and sought to relax visa regulations to that end.

In an effort to modernize outdated telephone systems, European nations have been opening sectors of their telecommunications markets to foreign competition.

And the time has passed when the United States and other wealthy nations willingly open their arms to immigrants.

Any nation on the planet that simply took the pledge and followed the map could open the hidden gold mine.

In 1980, both nations opened embassies in their respective capitals.

Those nations later opened their markets to foreign tobacco.

"Our nation opens its doors to productive investments by foreign enterprises."