In a striking revelation, experts are increasingly voicing concerns that Saudi Arabia's burgeoning nuclear program may have implications that extend far beyond the current governmental structures. The kingdom, known for its vast oil reserves, has been progressively advancing its nuclear technologies, raising significant questions about the long-term impacts and strategic planning required both regionally and globally.

Saudi Arabia's venture into nuclear capability is not just about meeting its energy needs but is also seen as a strategic pivot to cement its standing as a power broker in the Middle East. However, this move comes with substantial risks, especially considering the volatile political landscape of the region. The longevity of these nuclear projects could surpass the life span of the governments that initiated them, introducing a complex layer of challenges for future administrations and international policymakers.

The implications of a durable nuclear program are manifold. On one hand, it promises energy sustainability and economic diversification, crucial for the kingdom's Vision 2030 reform plan, which aims to reduce its dependency on oil. On the other hand, the enduring nature of nuclear technology and the materials involved necessitate robust governance frameworks to ensure safety, security, and non-proliferation.

Internationally, the scenario demands a recalibration of diplomatic and strategic approaches. Countries and international bodies must plan for continuity in engagement and oversight that accounts for potential political shifts within the kingdom. The geopolitical ramifications of a persistent nuclear program in Saudi Arabia are significant, considering the delicate balance of power in the Middle East.

Furthermore, the technological capacity to sustain a nuclear program independently raises questions about proliferation risks. The international community must enhance cooperative mechanisms to ensure that Saudi Arabia's nuclear ambitions do not contribute to regional arms races or breach non-proliferation treaties.

In conclusion, as Saudi Arabia charts its course towards a nuclear-powered future, the implications stretch far and wide. The durability of its program poses unique challenges that require thoughtful, strategic planning and international cooperation to ensure that its benefits do not turn into new sources of instability. The need for an adaptable, long-term strategy is clear — one that will safeguard the interests of the region and the integrity of global non-proliferation efforts.