rtokens: Pro-Moscow leaders in Chechnya have criticised Tim Guldimann , the Swiss diplomat who heads the OSCE Chechnya mission , saying he was biased toward Zelimkhan Yandarbiyev , president of the self-declared separatist government .
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tokens: Our mission in Chechnya has done all it can within the given limitations . "
ltokens: But one must not forget that the OSCE only has limited powers there , " said Cotti , who is also the Swiss foreign minister . "