Key aides including Gamal Mubarak step down from leadership of Egypt’s ruling National Democratic Party (NDP).
And/But: Mubarak holds onto presidency.
More: Hossam Badrawi, force within party backing reforms, to take over NDP.
Earlier: Egyptian military, government officials and U.S. rally around plan to strip Mubarak of power.
And: Mideast Quartet to prioritize Egypt crisis in Mideast peace process.