Answer the following question: Generate a question about the following movie plot: American and Russian Special Forces capture General Ivan Radek (Jurgen Prochnow), the dictator of a rogue terrorist regime in Kazakhstan that possessed stolen Soviet nuclear weapons, threatening to start a new Cold War. Three weeks after the mission, U.S. President James Marshall (Harrison Ford) attends a diplomatic dinner in Moscow, during which he praises the capture and insists the United States will no longer negotiate with terrorists. Marshall and his entourage, including his wife Grace (Wendy Crewson) and daughter Alice (Liesel Matthews), and several of his Cabinet and advisers, prepare to return to the United States on Air Force One. In addition, a number of members of the press corps have been invited aboard, including Russian terrorists and Radek loyalists disguised as journalists led by Ivan Korshunov (Gary Oldman). After takeoff, Secret Service agent Gibbs (Xander Berkeley), who has been a mole, enables Korshunov and his men to obtain weapons and storm the plane, killing many of the other agents and military personnel before taking the civilians hostage. Marshall is raced to an escape pod in the cargo hold while pursued by Korshunov's men but they are too late to capture him as the pod is ejected. Instead, Korshunov storms the cockpit and prevents the plane from making an emergency landing at Ramstein Air Force Base in Germany, and secures Grace and Alice separately from the other hostages. Several F-15s escort Air Force One as Korshunov has it piloted towards Radek-loyal airspace. Unknown to Korshunov, Marshall, a Vietnam War veteran and Medal of Honor recipient, has remained hidden in the cargo hold instead of using the pod and begins to observe the loyalists using his military training. Marshall manages to kill some of Korshunov's men and then uses a satellite phone to make contact with his Vice President Kathryn Bennett (Glenn Close), letting his staff know he is alive. Korshunov, believing that only a rogue Secret Service agent is in the cargo hold, contacts Bennett and demands Radek's...
Answer:
Who forces Marshall to contact the Russian President ?