Iran Update, December 10, 2025
Iran is seeking to develop and acquire electronic warfare (EW) systems, probably to attempt to remedy deficiencies that Israel exploited during the June 2025 war. The Iranian Defense Ministry unveiled the new “Sayyad-4” EW system on December 10 that can reportedly disrupt enemy positioning and navigation capabilities, according to Islamic Revolutionary Guards Corps-affiliated media.[23] This description suggests that this system is a GPS jamming system that can disrupt enemy precision targeting and target identification. Iran‘s unveiling of the Sayyad-4 system reflects continued Iranian investment in reconstituting its integrated air defense systems (IADS) in the wake of the Israel-Iran War. Iran has previously relied on Russia for EW systems such as the Krasukha-4, which were built to neutralize low earth orbit (LEO) spy satellites, ground-based radars, airborne surveillance radars, and radar-guided ordinance at ranges between 150 to 300 kilometers.[24] Israel possesses systems that can circumvent or suppress EW systems like the Krasukha.[25]
https://understandingwar.org/research/middle-east/iran-update-december-10-2025/
Iran Update, December 11, 2025
The United States seized an oil tanker, Skipper, off the coast of Venezuela on December 10 that had illicitly transported Iranian oil.[61] This seizure will likely increase Iran’s concerns that the United States and its allies may seize Iranian vessels to block Iranian oil exports. Skipper’s beneficial owner and operator is Nigeria-based Thomarose Global Ventures Ltd., and its registered owner is Marshall Islands-based Triton Navigation Corp.[62] US Attorney General Pam Bondi stated that Skipper has transported sanctioned oil from Venezuela and Iran.[63] Skipper has also conducted at least two ship-to-ship transfers to export illicit Iranian oil to China in 2025, according to two maritime analytics firms. [64] The United States sanctioned the vessel in 2022 for its role in illicit Iranian oil shipments under the vessel’s former name Adisa.[65] Iran’s embassy in Caracas condemned the seizure and claimed that it was a violation of international laws and norms.[66] The recent seizure comes amid Iranian concerns that the United States and its allies may seize Iranian vessels to prevent Iranian oil exports. Iran recently conducted a two-day naval exercise in the Persian Gulf, Strait of Hormuz, and Gulf of Oman that likely sought to deter the United States and its allies from seizing Iranian vessels and prepare Iranian forces for potential future maritime escalation.[67]
https://understandingwar.org/research/middle-east/iran-update-december-11-2025/