I'd go with something like "Welcome back my friends, to the show that never ends..."
[We're so glad you could attend, come inside, come inside... -ed]
From Reuters:
The United Nations on Monday lowered expectations for clinching a legally binding agreement at a U.N. climate change summit in Copenhagen in December, saying it might take longer to secure a final deal.For months Secretary-General Ban Ki-moon and other top officials at the United Nations have been urging industrialized and developing nations to overcome their differences so they can "seal the deal" and get a binding agreement in Copenhagen.
But recently U.N. officials and diplomats have said privately that it is unlikely a legally binding deal on reducing greenhouse gas emissions will be clinched at the Copenhagen summit. They have suggested that the most that could be expected was a nonbinding political declaration.
Ban's climate adviser Janos Pasztor made clear that the secretary-general was planning for "post-Copenhagen" talks....MORE