U.S. CBW Act Phase 2 Sanctions: Legal Risks Loom for Sudan Aviation Finance

From a legal and regulatory perspective, the CBW Act’s second phase introduces a nuanced set of prohibitions and carve-outs that demand careful parsing. The exemption for private carriers and the civil aviation safety clause create safe harbors, but the opposition to international financial assistance and extended export controls raise complex compliance obligations for global financial institutions.

The United States’ escalation of sanctions on Sudan under the Chemical and Biological Weapons Control and Warfare Elimination Act (CBW Act) entered a critical second phase on June 26, 2026, triggering a new set of restrictions that, while not stopping civil aviation or air cargo, introduce significant financial and commercial hurdles for Sudan’s air transport sector. The Sudanese Centre for Civil Aviation Studies and Research has dissected these measures, noting that reports of a blanket ban are misleading: the sanctions specifically target state-owned airlines, not privately owned carriers. This nuance is critical for understanding the actual impact on the ground.

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While the movement of goods is not halted, it becomes more expensive and slower—a scenario familiar from sanctions regimes on Iran and North Korea, where the cost of intermediation and risk premiums can inflate total logistics costs by 15–25%.

The sanctions originate from US concerns over Sudan’s alleged chemical weapons activities, leading to a two-phase rollout. Phase 1, enforced on June 27, 2025, already included a vital exemption for civil aviation safety, allowing US licenses for exports of parts and technical services essential for civilian passenger aircraft. That carve-out—rooted in the international principle that safety should not be compromised even under sanctions—remains a cornerstone. Phase 2 now adds a US ban on state-owned airlines operating within US territory, opposition to US support for loans or financial assistance to Sudan through international financial institutions (IFIs) like the World Bank and IMF, and additional export restrictions. However, with no direct flights between Sudan and the United States for several years—Sudan’s national carrier hasn’t served US routes—the operational flight ban has no immediate real-world effect. The center emphasizes that air cargo will continue to reach Sudan via foreign airlines and regional transit hubs.

The indirect consequences are where the pain points emerge. The sanctions are likely to raise shipping and insurance costs, tighten banking procedures, and impose stricter compliance requirements on any transaction linked to Sudan. For logistics operators and importers, this means higher freight rates, longer payment cycles due to enhanced due diligence by banks, and a general chilling effect on trade finance. While the movement of goods is not halted, it becomes more expensive and slower—a scenario familiar from sanctions regimes on Iran and North Korea, where the cost of intermediation and risk premiums can inflate total logistics costs by 15–25%.