GENEVA (Reuters) - The Syrian government has accepted a Russian suggestion of a ceasefire in the besieged rebel-held enclave of Eastern Ghouta, U.N. Syria envoy Staffan de Mistura told reporters on Tuesday.  I was just informed by the Russians today at the P5 meeting that the Russians have proposed and the government has accepted a ceasefire on Eastern Ghouta because we were and are very concerned about it,  de Mistura said.  Now we need to see whether this takes place but it s not coincidental that this has actually been proposed and agreed upon just at the beginning of this session (of peace talks in Geneva).   