WASHINGTON, Sept 29 (Reuters) - White House National Security Adviser Jake Sullivan in talks with Egyptian President Abdel Fattah al-Sisi and other officials emphasized President Joe Biden’s support for a two-state solution between Israel and the Palestinians, a senior administration official said on Wednesday. In the talks the U.S. and Egyptian delegations also urged a return to constitutional order in Tunisia and discussed support for a civilian-led transition in Sudan, the official said. Sullivan reiterated U.S. Support for a diplomatic resolution regarding the Grand Ethiopian Renaissance Dam and recognized Egypt’s concerns about access to the Nile"s waters, as well, according to the official. read more