BEIRUT/GENEVA - The United Nations' Syria envoy, Staffan de Mistura, is proposing to hold consultations in Geneva on new political talks, diplomatic sources said on Monday, more than a year after U.N.-led peace talks collapsed. Nobody from De Mistura's office was available to comment on the initiative, which follows a request by UN Secretary-General Ban Ki-moon for the relaunch of a political process. Diplomats said de Mistura was planning a 'series of consultations', likely to begin in May or June, to assess the chance of finding common ground between the main states with an interest in the conflict.