He then studied law, taking the second state examination, at the Ludwig Maximilian University of Munich in 1995.

He was a substitute for the Committee on Legal Affairs and a vice-chair of the Delegation for relations with the Mashreq countries.

In late 2012, Radwan and Ilse Aigner, who was about to leave national politics to run for state office, announced that they would switch electoral districts.

As member of the Committee on Foreign Affairs, Radwan serves as his parliamentary group’s rapporteur on relations with the Middle East, the Maghreb and Sudan.

In the negotiations to form a coalition government under the leadership of Chancellor Angela Merkel following the 2017 federal elections, Radwan was part of the working group on foreign policy, led by Ursula von der Leyen, Gerd Müller and Sigmar Gabriel.