The participation of Hamas in the round of negotiations on a Gaza ceasefire planned for Thursday is still uncertain, a representative of the Palestinian Islamist group, who did not want to be named, told dpa on Wednesday. He said Hamas would not take part in the talks until the mediators presented a clear plan for implementing US President Joe Biden’s proposals. The negotiations are to take place in Cairo or the Qatari capital Doha. The US, Qatari and Egyptian mediators have urged Israel and Hamas to reach an agreement. A framework has been drawn up that initially provides for a complete and u…