Chapter 32 — Key Takeaways

Constitutional foundations

The Constitution divides foreign-policy authority between Congress (Article I, Section 8 — declare war, fund the military, regulate foreign commerce, define offenses against the law of nations) and the President (Article II, Section 2 — Commander-in-Chief, treaty-making with two-thirds Senate consent, ambassador appointments).
Modern practice has drifted toward executive accumulation of most operational foreign-policy authority. The last formal declaration of war was 1942. Major military actions since (Korea, Vietnam, Iraq, Libya, Syria, Iran, Yemen) have been conducted under AUMFs or Article II claims, sometimes with congressional acquiescence and sometimes against congressional objection.
The 1973 War Powers Resolution has had limited empirical effect on presidential war-making.
Treaty practice has shifted toward executive agreements (no Senate ratification required) and congressional-executive agreements (simple-majority approval), reducing the role of the two-thirds Senate threshold.

The State Department runs U.S. diplomacy with ~70,000 employees and embassies in ~190 countries.
The Department of Defense has ~1.4M active-duty service members and ~770k civilian employees, organized into five services and eleven combatant commands.
The Intelligence Community comprises 18 agencies coordinated by ODNI, including CIA, NSA, DIA, and the IC components of FBI, DHS, Treasury, and the services.
The National Security Council in the EOP coordinates foreign-policy decisions; the NSA (National Security Advisor) heads the NSC staff.
Treasury runs sanctions through OFAC; the USTR negotiates trade.

The chapter steel-manned six traditions, each with serious adherents:

Realism / restraint (Mearsheimer, Walt, Wertheim, Quincy Institute) — calibrate U.S. power to vital interests; avoid overextension.
Liberal internationalism (R. Kagan, Ikenberry, Slaughter) — sustain the post-1945 rules-based order; allies are force multipliers.
Neoconservatism (Kristol, the Project for the New American Century legacy) — promote democracy actively; preserve U.S. primacy.
Progressive internationalism (Sanders foreign policy, Rhodes, Duss) — reduce militarism; prioritize human rights and climate.
"America First" nationalism (Lighthizer, Colby, Maitra, Mills) — prioritize concrete U.S. interests; demand alliance burden-sharing; selectively decouple from adversaries.
Libertarian non-interventionism (Cato, Paul tradition) — a free society at home is incompatible with empire abroad.

These traditions cut across partisan lines; any given administration's policy reflects coalitions among them.

China. Bipartisan consensus on competition (since ~2017); disagreement on tactics — decoupling pace, Taiwan posture, technology controls, climate cooperation alongside competition.
Russia / Ukraine. Largest U.S. assistance commitment since the Iraq War. Bipartisan in 2022; sharply polarized by 2024–25; Trump-2 pushing toward negotiation.
Israel-Gaza. Unusually crosscutting coalitions in both parties. Pro-Israel American and pro-Palestinian American positions both have substantive grounds; the chapter does not adjudicate.
Iran. JCPOA collapse (2018); Israel-Iran direct strikes (2024–25); ongoing maximum-pressure / negotiation tension.
NATO. Pre-2017 bipartisan consensus on NATO's value challenged by Trump-era burden-sharing pressure; European defense spending substantially increased post-2022.
Pacific alliances. Bipartisan investment in Indo-Pacific posture, AUKUS, Quad, Japan and South Korea cooperation.
War powers. The 2001 and 2002 AUMFs remain on the books; reform proposals have repeatedly stalled.

FY 2024 defense budget approximately $890 billion — roughly 3x China's official spending, comparable to next ten countries combined, ~3% of GDP.
The defense industrial base is increasingly central to strategy; Ukraine exposed limits on U.S. munitions production capacity.
Veterans' care (VA budget ~$325B FY 2025) is part of the genuine cost of foreign-policy decisions.
Covert action requires presidential findings reportable to congressional intelligence committees (Gang of Eight in particularly sensitive cases).
Surveillance authorities (Section 702, Section 215 historically) remain politically contested across both ideological wings.

The post-WWII free-trade consensus has substantially collapsed. Trump-1 tariffs (2018), Biden continuation and expansion of export controls (2021–2025), Trump-2 broader tariff regime (2025–) represent a bipartisan turn away from free-trade-as-default.
Industrial policy is now bipartisan, even where instruments differ.
Constitutional questions about the scope of executive tariff authority are live in 2025–26 litigation.

Steel-man, never straw-man. Each tradition presented in the form its smartest adherents would recognize.
Empirical and normative claims distinguished. Where evidence is clear, state it; where reasonable people disagree, present the disagreement.
Pair the examples. Both parties' actions are examined; both parties' coalitions are described as their members would describe themselves.
Don't adjudicate the contested. On China, Ukraine, Israel-Gaza, war powers, defense levels, alliance commitments — citizens decide. The chapter informs the decision; it does not make it.

The American system was designed for disagreement. Foreign policy is no exception; the constitutional structure presupposes contestation between branches.
There is a gap between design and practice. The drift of foreign-policy authority to the executive is the canonical example.
Power flows to those who show up. Citizens who engage with primary sources (sanctions lists, NDAA texts, congressional testimony) understand the policy debate at a level the cable-news consumer does not.
Every political question has at least two honest sides. The chapter's six traditions, and the steel-manned positions on each contested issue, embody this commitment.
Institutions shape behavior. The interagency structure, the IC's role, the NSC coordinating function, the legal architecture of war powers and sanctions — these institutions determine the range of options actually available to any administration.