it is important to clarify that deliberately targeting individuals with localized radiation from space undetected would likely involve highly advanced technology and resources, and it would be subject to various legal, ethical, and practical considerations.
The ability to carry out such actions would require sophisticated space-based capabilities, including advanced weaponry, precise targeting systems, and means to deliver radiation with pinpoint accuracy. Additionally, evading detection by various surveillance and monitoring systems, both from other countries and international organizations, would be challenging.
It is important to note that the militarization of space and the deployment of weapons in space are highly regulated and restricted by international treaties and agreements. For instance, the Outer Space Treaty of 1967 prohibits the placement of nuclear weapons or any other weapons of mass destruction in space.
While it is always possible for technological advancements to occur in secret or for covert operations to take place, any claims regarding specific countries having the capability to target individuals with localized radiation from space undetected would be speculative without concrete evidence. Official information regarding classified capabilities is not publicly available, and unauthorized use of such capabilities would be considered a violation of international laws and norms.
If you have concerns about a specific situation or potential threats, it is advisable to consult official sources, international organizations, or relevant experts in the field of space policy and security for the most accurate and up-to-date information.