Securing the Future: Arms Control and International Security for the Modern Age

Defense Posture and Global ThreatsHouse Foreign Affairs · 2026-03-25 · 119th Congress
The House Foreign Affairs Committee convened this hearing to examine the State Department's reorganized "T family" of bureaus overseeing arms control, non-proliferation, and international security, and to question Under Secretary Thomas DiNanno on nuclear policy, arms sales, counter-narcotics, and emerging threats. Begins at 0:03:07
Transcript
Highlights

Title

State Department arms control leadership testifies amid Iran war dispute

Purpose

The House Foreign Affairs Committee convened this hearing to examine the State Department's reorganized "T family" of bureaus overseeing arms control, non-proliferation, and international security, and to question Under Secretary Thomas DiNanno on nuclear policy, arms sales, counter-narcotics, and emerging threats. The session was dominated by Democratic demands for a separate public hearing on the ongoing US war in Iran, culminating in a formal motion to subpoena Secretary Rubio, Steve Witkoff, and Jared Kushner, which failed on a party-line-adjacent roll call vote (22-24). Begins at0:03:07

Who spoke

Chairman Brian Mast (R-FL)0:02:29: Opened the hearing and pledge, later sparred at length with Ranking Member Meeks over classified briefing attendance and transparency0:18:42, and closed by defending the emergency arms-sale exemption used for Israel/UAE/Jordan3:19:20.

Rep. Keith Self (R-TX), Europe Subcommittee Chairman0:04:18: Gave opening remarks on the T-family reorganization, Russian and Chinese nuclear buildup (China projected to reach 1,000 warheads by decade's end)0:06:59, and his SHADOW Act on hybrid warfare0:09:07; later questioned DiNanno on AI chip export controls to China and the Bureau of Emerging Threats0:30:21.

Ranking Member Gregory Meeks (D-NY)0:12:01: Opened by criticizing the committee for not holding a public hearing on the Iran war, moved to subpoena Rubio, Witkoff, and Kushner0:17:32, and pressed DiNanno with yes/no questions on whether the US has invited Russia or China to strategic-stability talks0:36:29; reiterated his subpoena motion during floor debate3:24:20.

Under Secretary Thomas DiNanno, State Department0:24:51: Testified that New START expired without extension and was "ineffective," calling for a new, verifiable, enforceable treaty0:28:44; repeatedly deferred questions on Iran's nuclear stockpile, Israel's nuclear capability, and battlefield decisions to the "War Department" and Admiral Cooper1:53:102:04:13; described 15 foreign terrorist organization designations against cartels2:16:27.

Rep. Joe Wilson (R-SC)0:42:09: Praised the administration's Iran policy and asked about the status of 123 civil nuclear agreements with Saudi Arabia0:44:05, learning one has been signed and four initialed0:44:27.

Rep. Bill Keating (D-MA)0:47:13: Pressed DiNanno on support for Ukrainian mobile fire teams and asked directly whether Putin is a war criminal, which DiNanno declined to answer0:50:53.

Rep. Young Kim (R-CA)0:57:51: Framed Iran's nuclear infrastructure as "buried under rubble" post-strikes and asked about post-conflict IAEA coordination0:55:04.

Rep. Ami Bera (D-CA) [0:57:51 approx./labeled Barah]: Asked about US extended deterrence commitments to South Korea under the Washington Declaration and nuclear-powered submarine cooperation0:58:14, plus narcotics trafficking in the Pacific Islands1:01:46.

Rep. James Moylan (R-Guam, listed as Boland)1:03:16: Asked about arms-control opportunities amid dual nuclear-peer adversaries1:04:11 and China's AI capabilities1:05:59.

Rep. Madeleine Dean (D-PA)1:08:45: Challenged DiNanno on INL financial-network tracking against drug cartels and demanded documentation of a "comprehensive security assistance review"1:09:56; pressed for evidence that fentanyl was on boats struck by the administration1:12:52.

Rep. Bill Huizenga (R-MI)1:15:10: Discussed his Missile Technology Control Review Act and questioned DiNanno on modernizing the 1987 MTCR regime1:15:30, with DiNanno agreeing it "doesn't go far enough"1:18:01.

Rep. Sydney Kamlager-Dove (D-CA, listed as Mume)1:20:37: Pressed DiNanno for a prioritized list of AI-related national security threats, accusing him of filibustering her time1:21:47; asked yes/no questions on accountability for US partners misusing American weapons1:24:02.

Rep. Young Kim (second appearance, listed separately) — see above.

Rep. Andy Kim (D-NJ)1:25:57: Asked about the AUKUS senior adviser's role and coordination with the Pentagon and Energy Department1:26:51.

Rep. (unlabeled, "Representative Vesky")1:32:04: Criticized lack of a dedicated Iran war hearing and asked about Taiwan energy resilience and the Taiwan Energy Security and Anti-Embargo Act1:33:24.

Rep. Ryan Zinke (listed as Bombgardner)1:37:45: Asked what leverage could bring China into meaningful nuclear arms talks1:38:22 and about expeditionary INL capabilities from his own Afghanistan experience1:40:52.

Rep. Jonathan Jackson (D-IL)1:43:21: Delivered a philosophical statement on arms control needing enforcement, then asked what mechanisms ensure future agreements are binding, not symbolic1:46:09, and how Iran acquired advanced weapons despite sanctions1:47:03.

Rep. (unlabeled, "Representative Illinois, Mr.")1:48:44: Argued Congress needs clarity on Iran war goals and asked what the administration's plan is to secure Iran's 60%-enriched uranium stockpile of over 440 kg1:53:10.

Rep. Nancy Mace (listed as Biggs, SC)1:55:00: Discussed biological weapons policy and China's military-civil fusion strategy, asking about steps to fulfill Trump's UN call to eliminate bioweapons development1:56:57.

Rep. Joaquin Castro (D-TX)2:00:00: Detailed strikes near Iranian and Israeli nuclear facilities and asked DiNanno for the administration's risk assessment of nuclear escalation2:01:29; pressed repeatedly on whether Israel has nuclear weapons, which DiNanno declined to answer2:03:33.

Rep. Cory Mills (R-FL)2:05:11: Asked about DDTC licensing delays (return-without-action cases) affecting defense exports2:05:36.

Rep. Gabe Amo (D-RI, listed as Emma)2:10:33: Asked about AUKUS red-tape reduction2:11:04 and criticized the lack of a nuclear arms control plan and the elimination of the Office of Countering Violent Extremism2:14:15.

Rep. Darrell Issa (R-CA)2:15:46: Asked DiNanno to detail counterterrorism designations (nearly 30 FTOs, 15 narco-groups)2:16:09 and the benefits of the T-family bureau consolidation2:17:05.

Rep. Greg Stanton (D-AZ)2:21:39: Criticized the Iran war's cost (13 service members killed, gas prices near $5/gallon in Arizona)2:22:35 and asked about delivery backlogs on $13 billion in stalled Taiwan arms sales2:25:01.

Rep. Tim Burchett (R-TN)2:27:17: Asked about reducing international commitments that don't serve US interests2:27:53 and burden-sharing with European allies2:29:09.

Rep. Brad Sherman (D-CA)2:32:16: Asked about international AI limitation agreements2:32:53 and pressed on whether Congress was properly notified (Democrats included) of a Saudi nuclear cooperation agreement lacking safeguards2:34:03, invoking comparisons to the 1979 Iranian revolution2:36:05.

Rep. Warren Davidson (R-OH)2:37:53: Praised the T-family reorganization and asked about countering Southeast Asian cyber scam centers2:39:34 and INL's shift toward counter-cartel focus under his NARCO Act2:41:10.

Rep. (unlabeled, Washington member, "Miss")2:43:16: Pressed DiNanno on whether Operation Midnight Hammer "obliterated" Iran's enrichment capability, contrasting Trump's and DNI Gabbard's public statements with DiNanno's refusal to assess2:44:35; noted New START's expiration marks the first time since 1972 there's been no treaty-bound cap on US-Russia strategic nuclear weapons2:48:46.

Rep. Rudy Yakym (listed as Indiana member)2:49:13: Asked about the FIRST program for small modular reactor exports2:50:14 and Chinese fentanyl precursor chemical exports2:52:37.

Rep. Sarah McBride (D-DE)2:53:44: Warned that a "might makes right" global order could push non-nuclear states like Taiwan toward seeking nuclear weapons, citing Macron's warning of a new nuclear age2:56:08.

Rep. Dina Titus (D-NV)3:04:00: Raised concerns about resumed nuclear testing's effects on Nevada, citing 73% of Nevadans opposing explosive testing, and challenged DiNanno's diplomatic messaging on Chinese/Russian test violations3:05:253:07:08.

Rep. (unlabeled, "Representative Fine")3:09:15: Compared current Iran-related emergency arms sales to Biden-era emergency sales to Ukraine and Israel, asking DiNanno to confirm the current conflict qualifies as a "crisis"3:10:543:12:23.

Key moments

Meeks moved to subpoena Secretary Rubio, Steve Witkoff, and Jared Kushner to testify publicly on the Iran war before the end of April 2026, citing the war's 26th day, a requested $200 billion, and eased sanctions on Russian oil0:17:32; the motion failed 22-24 in a roll call vote at the end of the hearing3:31:32.

DiNanno confirmed New START expired with no extension mechanism available and said the treaty had "no impact" on China's arsenal0:28:442:47:06; a member noted this is the first time since 1972 there is no treaty-bound cap on US-Russia strategic nuclear weapons2:48:46.

DiNanno declined to say whether Israel possesses nuclear weapons when pressed repeatedly by Rep. Castro, saying "I can't comment on that"2:04:13; Chairman Mast later noted Israel's official policy is to neither confirm nor deny2:05:11.

DiNanno would not answer whether Vladimir Putin is a war criminal, telling Rep. Keating "I'm not going to answer yes or no"0:50:53.

DiNanno said Iran had accumulated more than 440 kg of uranium enriched to 60% before the June 25 strikes, and that decisions on securing that stockpile rest with Admiral Cooper, not his office1:53:102:01:29.

DiNanno declined to confirm whether US strikes "obliterated" Iran's nuclear program, despite the committee member quoting President Trump's "obliterated is accurate" claim and DNI Gabbard's sworn testimony that Iran has made no rebuilding efforts2:44:352:45:01.

Rep. Dean pressed DiNanno on evidence that fentanyl was aboard boats struck by the administration; DiNanno said the operation and its justification were run by the "War Department," not his office1:12:521:13:33.

Rep. Sherman raised a November 21 nuclear cooperation notice to Saudi Arabia sent to the committee chair but allegedly not the ranking member, questioning whether the administration selectively notifies only Republicans on required congressional notices2:34:03.

Chairman Mast and Ranking Member Meeks had a sustained, heated exchange over classified briefing attendance, with Mast alleging Meeks arrived 45 minutes late to a briefing and Meeks countering that the American people deserve public hearings, not classified-only briefings0:18:42.

Rep. Fine compared the current emergency arms-sale authority used for the UAE, Kuwait, and Jordan to Biden-era emergency sales to Ukraine (2022) and Israel (2023), and DiNanno confirmed he considers the current Iran conflict a "crisis" justifying the same authority3:10:543:12:23.

Metadata

CommitteeHouse Foreign Affairs
Chamber / CongressHouse · 119th Congress
Date2026-03-25
TypeHearing
Witnesses
The Honorable Thomas DiNanno — Under Secretary for Arms Control and International Security, U.S. Department of State
Videoyoutube
Transcript784 caption blocks · 33,013 words · 3:32:21 runtime
EventCongress.gov 119086