reports that the top US Middle East adviser, Brett McGurk, has joined the latest round of indirect negotiations between Hamas and Israel in Doha, Qatar. The two sides are meeting with mediators, one of them the United States, on the feasibility of an end to hostilities in the Gaza Strip and the exchange of Israeli captives still held there for Palestinian prisoners jailed in Israel. A report from US outlet says that McGurk, the top adviser on the Middle East in the administration of US President Joe Biden, has joined those talks in Doha. cited two anonymous sources in its report, one a US official.