The autonomous technology industry has seen remarkable strides in the last decade, venturing far beyond self-driving cars and trucks. A noteworthy expansion of this technology is its application to military assets, particularly, the development of self-driving tanks. These armored vehicles are not merely tools of warfare but illustrate the profound intertwining of technology and modern defense strategies.

The initial concept of self-driving tanks sparks numerous debates concerning ethics, utility, and security. Advocates underscore the potential to minimize soldier casualties and enhance strategic military operations. Meanwhile, skeptics voice concerns over ethical implications and the possibility of technology malfunctions or cyberattacks.

A significant advantage of deploying autonomous tanks lies in their capability to undertake high-risk missions, limiting the direct exposure of military personnel to danger zones. These mechanical behemoths can navigate through treacherous terrains, identify targets, and make calculated decisions, all while being remotely monitored by operators stationed in secure locations. Moreover, autonomous tanks can be instrumental in performing reconnaissance, enabling military strategists to formulate informed decisions without jeopardizing human lives.

From a technological standpoint, self-driving tanks amalgamate a suite of sophisticated technologies. Radar, LiDAR, and a plethora of sensors ensure safe navigation, while artificial intelligence (AI) algorithms facilitate decision-making and target identification. Machine learning models process data, refine strategies, and predict outcomes based on patterns, thus enhancing operational efficacy. These technologies work in unison to create a system that can analyze, decide, and act in real-time, abiding by predefined rules of engagement.

The ethical concerns cannot be dismissed when exploring the domain of autonomous military vehicles. The decision-making algorithms governing these tanks must strictly adhere to international laws and military ethics. Developing an AI system that comprehensively understands and abides by the complex and situational rules of warfare is a colossal challenge. Moreover, autonomous tanks must be safeguarded against cyber threats that might compromise their operations, veering them off the intended ethical and strategic path.

On the international stage, the deployment of self-driving tanks necessitates rigorous legal and diplomatic considerations. Crafting international norms and agreements is imperative to ensure that autonomous military technologies are employed judiciously.

In conclusion, the emergence of self-driving tanks is a testament to the leaps of technological advancements, showcasing profound potential and posing intricate challenges. While they can fortify military strategies by mitigating human risk, it is paramount to navigate the ethical, legal, and security quagmires thoughtfully and responsibly. The future of autonomous military technology thus resides not merely in technical innovation but equally in ethical application and robust international governance.