She calls this a "key condition for the success of the Copenhagen conference."

VOA: standard.2009.12.16

Late this year, scientists and politicians are to gather in Copenhagen for a key global climate-change summit in an effort to thrash out a consensus on cutting heat-trapping greenhouse gasses.

VOA: standard.2009.03.12

This is something that we have been doing so far." Minister Jeremic admits cooperation with The Hague tribunal is a key condition to realize the ambition of Serbia and other Balkan nations to join the European Union.

VOA: standard.2009.10.25

"I want to emphasize our commitment to the Nigerian market,". "This new flight is a key part of Delta's African expansion and ensures that we maintain our position as the number one US carrier to Nigeria and more broadly to Africa."

VOA: standard.2009.06.13