How do port delays, transportation bottlenecks, or trade restrictions affect warehouse safety stock decisions and reorder points?

Global Supply Chain in Warehouse Management
Warehouses are the unseen backbone of the global supply chain, translating abstract demand forecasts into tangible product flows. In an era of heightened globalization, they face amplified complexity: longer supplier networks, varied regulatory landscapes, fluctuating freight costs, and diverse customer expectations across regions. Effective warehouse management must balance operational efficiency with service resilience, leveraging strategic planning, robust processes, and adaptive capabilities to absorb disruptions and sustain performance.

Please answer the following:

How do port delays, transportation bottlenecks, or trade restrictions affect warehouse safety stock decisions and reorder points?
What are the key considerations in warehouse layout and technology when supporting a global distribution network versus a strictly domestic operation?
Why is end-to-end visibility critical for global warehouse operations, and what common barriers hinder timely information sharing across borders?
Make sure you are supporting your answers fully and that your source research is identified with citations and references.