US military planners have been caught off guard by Iran's sophisticated asymmetric warfare campaign across the Gulf, according to former officials and military experts. Tehran has leveraged a combination of precision intelligence, drone swarms, and missile barrages to strike American bases, energy facilities, and strategic targets throughout the region. The campaign has brought oil shipments through the Strait of Hormuz to a trickle and sent global energy prices soaring.

Former US officials say Iran has exploited commercial satellite imagery, Russian targeting data, and its proximity to Gulf states to launch attacks with minimal warning time. The drones' small radar signatures and low-altitude flight paths have proven difficult for US air defenses to counter, even with the deployment of two aircraft carrier strike groups. Iranian forces have fired more than 3,000 missiles and drones at US allies and hundreds at Israel, demonstrating both volume and precision.

Military experts warn that Iran's use of inexpensive Shahed drones—powered by motorcycle engines and made partly from styrofoam—represents a new tactical paradigm. Unlike ballistic missiles, these drones can skim across the Gulf's surface, reducing radar visibility while maintaining targeting accuracy. The conflict has exposed vulnerabilities in US air defense systems designed for different threats, forcing rapid tactical adaptations as both sides continue to evolve their strategies.