US Lawmakers Float NDAA Amendments Conditioning Arms Sales to Türkiye — What’s Really at Stake

What happened: In late August 2025, several members of the US House introduced amendments to the FY2026 National Defense Authorization Act (NDAA) aimed at conditioning or pausing US arms transfers to Türkiye and commissioning new US government assessments tied to Cyprus and alleged ties to Hamas. These are proposals, not law—final NDAA text can change during conference.
What the amendments would do (in plain terms)
Condition arms sales: A leading amendment (Rep. Josh Gottheimer) would prevent new US arms transfers to Türkiye unless the administration submits reports addressing issues such as sovereignty violations against Greece/Cyprus, support for US-designated terrorist groups, and use of US-origin systems in Cyprus. A pre-sale briefing to Congress would be required. Some proposals envision multi-year restrictions unless behavior changes.
Order security assessments: A separate amendment (Rep. Dan Goldman) seeks a Pentagon-led report on how Türkiye’s military presence in northern Cyprus impacts US and allied security, with classified annexes if needed. Another proposal calls for a report on alleged links to Hamas.
Reinforce 3+1 cooperation: Companion language discussed in coverage would bolster US-Greece-Cyprus-Israel security cooperation (training programs and funding lines). These ideas echo provisions reported in Greek media but will ultimately depend on final NDAA negotiations.
- Related filings worth noting: Separately, House rules filings show submitted amendments touching F-35 transfers to Türkiye—illustrating the broader congressional appetite to place conditions on advanced systems. (Status: submitted, not adopted.) (Source)
Why this matters for US foreign policy
Conditionality over automaticity
Congress is signaling that defense cooperation with Türkiye is not automatic; it’s conditional on behavior(Cyprus posture, alliances, and procurement choices like the S-400). That elevates congressional oversight in day-to-day US-Türkiye defense ties.- Eastern Med alignment becomes more explicit
The proposals track with a trend of deeper US alignment with Greece and Cyprus (and Israel) on maritime security and counterterrorism in the Eastern Mediterranean—especially as energy routes, EEZ disputes, and Gaza-related instability keep the region in focus. Source - NATO cohesion vs. congressional leverage
Conditioning arms sales to a NATO ally raises a familiar tension: maintain alliance cohesion versus use leverage to shape behavior. Expect the executive branch to caution against measures that could push Ankara to diversify further toward non-US suppliers, complicating interoperability. (Inference based on past S-400 dynamics and current reporting trends.) - Process reality check
These amendments still must survive House/Senate negotiations and a conference committee. Their introduction alone, however, sets bargaining markers that can influence executive-branch policy even if the exact text doesn’t make the final bill.

Implications for Türkiye’s regional relationships
With Greece & Cyprus: If enacted, US conditionality amplifies deterrents against high-risk moves in the Aegean/Eastern Med and adds US political costs to any escalation around Cyprus. It could also embolden Athens and Nicosia diplomatically, given the prospect of US reports and briefings spotlighting their concerns.
- With Israel & the 3+1 format: Additional US backing for 3+1 cooperation (if included) would institutionalize trilateral maritime/counter-terror capacity building—potentially narrowing Ankara’s room to maneuver unless it resets some regional stances.
- With Washington & NATO: Stricter US conditions risk nudging Türkiye to double down on alternative defense partners and transactional diplomacy, while keeping its crucial roles (Black Sea access, grain corridors, migration management). The net effect could be more bargaining and episodic friction rather than a clean break—unless future US restrictions bite hard. (Forward-looking analysis informed by current reporting.)
What to watch next
Committee & floor outcomes: Which amendments get ruled in order, adopted, or dropped as the NDAA moves
Executive branch posture: Whether State/DoD pre-emptively offer briefings/reports to blunt congressional restrictions.
- Regional signaling: Any changes in Eastern Med naval activity, Cyprus CBMs, or Ankara’s procurement choicesvis-à-vis Russia/others. (Context from region-watching outlets.)