Sydney, Australia -- U.S. Space Force Brig. Gen. Anthony Mastalir, USSF Indo-Pacific commander, emphasized the critical role of space capabilities in ensuring stability across the Indo-Pacific region at Australian Space Summit 2025 on May 27-28.
Speaking to a diverse audience of defense leaders, industry partners, and policymakers, Mastalir underscored the evolving mission of the U.S. Space Force and the depth of the U.S.-Australia military alliance during a keynote address and panel discussion.
“In light of today’s challenges and the imperative for a robust, integrative response … we established U.S. Space Forces Indo-Pacific in 2022,” Mastalir said. “Our mission remains unchanged: integrated space operations to preserve a free and open Indo-Pacific.”
Mastalir highlighted the recent establishment of Space Force components in South Korea and Japan, underscoring a growing forward presence designed to deter threats and enhance operational integration with allies.
“Guardians in these components work side by side with our allies to integrate space capabilities into military operations and protect friendly forces from space-enabled attacks,” he explained.
He also reaffirmed the indispensable role of Australia in U.S. defense strategy, “Australia is not just a strategic partner, but a true friend, and an essential pillar of deterrence here,” Mastalir said. “Our nations have forged a bond that is both enduring and meaningful.”
Australian Defense Force Lt. Gen. Susan Coyle, ADF Joint Capabilities chief, underscored the critical importance of U.S.-Australian military cooperation in the rapidly evolving space domain while participating in a joint panel discussion with Mastalir.
"We have fought together since World War One,” Coyle said. “You don't build friends in a crisis. You build friends now, and we have a deep shared history of that.
Both generals discussed a shared strategic vision for the Indo-Pacific, focusing on deterrence and responsible space operations. Mastalir stressed that their approach is about "peace through strength," with both nations committed to preventing conflict by demonstrating robust defensive capabilities.
Coyle emphasized the importance of collaborative efforts, stating that Australia is "interested in how we can be a better, more lethal and more survivable defense force that contributes to peace and security in our region."
The discussion revealed a unified approach to space domain challenges, with both leaders highlighting the need to protect space assets critical to joint military operations. They also emphasized the importance of space domain awareness, satellite protection, and developing technologies to counter emerging threats.
“Every challenge we face is also an opportunity—an opportunity to innovate, to grow stronger, and to set a shining example for the world,” Mastalir said.
With mounting challenges in the space domain, U.S. Space Forces Indo-Pacific is positioning itself as a keystone of deterrence, innovation, and allied cooperation in the region.
As Mastalir affirmed, “This isn’t just about building stronger satellites or more agile fighting capabilities. It’s about building a legacy—one that fortifies our shared values and affirms our belief in a better, brighter future.”