The state's role in regional and international affairs shifts with the leadership change, particularly when the new leader is younger and more ambitious than his predecessors. The role of Saudi Arabia has been evolving with the rise of de facto leader Muhammad Bin Salaman(MBS). As a foreign policy tool, Saudi Arabia, under the leadership of MBS, has chosen a particular diplomatic approach to lessen conflict, promote regional peace and stability, and develop its economy in order to gain more clout in the Middle East. So, what is the unique diplomatic regional approach of MBS, and why is KSA, under MBS's leadership, still facing serious challenges in the region? This study briefly explores Muhammad bin Salman's diplomatic initiatives toward regional countries with strained relations. This study highlights the challenges the Kingdom of Saudi Arabia faces under Muhammad bin Salman's leadership in achieving diplomatic success with regional countries.