Diego Santilli was sworn in as Argentina's new Chief of Cabinet on June 30, 2026 [4].
The appointment marks a strategic shift in the administration's approach to governance. By placing Santilli in this role, President Javier Milei aims to formalize the coordination of ministries and signal stronger political alignment with provincial leaders.
The ceremony took place at the Casa Rosada in Buenos Aires at 5:30 p.m. local time [3, 4]. President Milei presided over the event, which was characterized by a visible display of unity. This included a triple embrace between Milei, Santilli, and Manuel Adorni [1, 3].
Attendance at the event highlighted the administration's current relationship with regional authorities. Reports on the number of provincial governors present vary, with sources citing between 13 [4] and 14 [2] attendees. This presence of governors and leaders from the Pro party suggests a concerted effort to build a broader federal coalition [5, 6].
As Chief of Cabinet, Santilli is now tasked with the administrative management of the national government. His role involves bridging the gap between the presidency and the various ministries to ensure policy implementation across the country [1, 5].
The event was closely monitored by political analysts as a barometer for Milei's ability to maintain stability within his cabinet and among the provinces. The high-profile nature of the swearing-in, complete with symbolic gestures of camaraderie, serves as a public endorsement of the new leadership structure [1, 6].
“Diego Santilli was sworn in as Argentina's new Chief of Cabinet on June 30, 2026.”
The appointment of Diego Santilli represents an attempt by the Milei administration to institutionalize its relationship with provincial governments. By selecting a figure capable of coordinating with governors, the presidency is moving toward a more traditional political management style to ensure the viability of its federal agenda and reduce friction between the central government and the provinces.
