Who warned of a possible "space Pearl Harbor" involving surprise attacks on U.S. military space assets?

The concern over a potential "space Pearl Harbor" highlights the vulnerability of U.S. military space assets to surprise attacks. This phrase often encapsulates the notion that adversaries could exploit the reliance on space-based technologies for communications, navigation, and intelligence. Donald Rumsfeld was particularly vocal about this risk during his tenure as Secretary of Defense in the early 2000s. He emphasized the importance of addressing these vulnerabilities to protect critical space assets. His warnings were aimed at ensuring that the U.S. military was not caught off-guard by advancements in the capabilities of other nations that could threaten space dominance. This foresight is essential in understanding the strategic implications of space in modern warfare, making Rumsfeld a key figure in discussing these national security concerns. Other individuals mentioned may have been involved in defense matters, but Rumsfeld's specific warnings about space attacks tie directly to this critical issue.