Frank Wisner, a former ambassador to Egypt who was sent to Cairo earlier this week by President Obama meet with Egyptian President Hosni Mubarak, said Mubarak “must stay in office” to guide his country through important transitions in the coming months. “You need to get a national consensus around the pre-conditions for the next step forward,” Wisner told the Munich Security Conference on Saturday. “The president must stay in office in order to steer those changes through.” Wisner said he considered Mubarak’s continued leadership in his country “critical.”