We have not reached that stage yet,". New Delhi and Beijing signed an agreement in October to jointly work on climate change and stand united at the Copenhagen conference.

VOA: standard.2009.11.27

They also sent a jointly signed letter to Barack Obama and his Russian counterpart, Dmitry Medvedev, who were about to meet for the first time, urging them to make a commitment to eliminate nuclear weapons and start making further big cuts in their own arsenals.

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Exxon Mobil and Russia's Rosneft in April signed a landmark deal to jointly develop the Arctic's rich untapped reserves.

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In 1999 Chiron signed an agreement with Aventis to jointly develop and fund the technique.

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