Foreign policy

Said "the United States needs a strong Israel" and that a president should push to act on humanitarian crises abroad.

Said Trump launched a "war of choice" in Iran that ignores American law and has no plan for what comes next.

Praised the June 2025 U.S. strikes on Iran's nuclear sites, calling an Iranian nuclear weapon "the most acute immediate threat."

Said in 2023 his top foreign policy goal would be to restrain Iran and China, calling for "strategy denial in the Indo-Pacific."

Opposed the Iran war as an "unauthorized war of choice" and urged Congress to act.

Wants America to be "one giant Switzerland," armed and neutral, and to bring U.S. troops home.

Traveled to Romania "to stand with one of our strongest NATO allies" and to see how it is helping Ukraine defend itself.

Backed the June 2025 U.S. strikes on Iran, saying "America can never allow Iran to obtain a nuclear weapon."

Resigned saying he could not "in good conscience support the ongoing war in Iran"; opposes open-ended Middle East wars.

Filed a 2026 resolution to impeach Defense Secretary Hegseth, saying forces were sent into the Iran war without congressional approval.

No clear public position found yet.

Called the Iran war reckless and said Trump "manufactured" the crisis.

Called the Iran war "unlawful," "unnecessary" and "catastrophic"; backed the War Powers Resolution.

Opposes the Iran war, calling it a "regime change war-of-choice" launched without congressional authorization.

Opposes the use of force in Venezuela and the cartel strikes.

Publicly backs the administration's Iran push and is more skeptical of a deal than Vance; described as more hawkish.

Criticized Trump for bypassing Congress on Iran while calling its regime "the leading state sponsor of terrorism."

Her 2024 platform called for cutting military spending 50% to 75%, closing most U.S. bases abroad, and replacing NATO.

Would deepen cooperation with NATO, the EU and other allies.

Leads the Iran negotiations; AP reporting describes him as seen as running on opposition to foreign wars.

Backed the 2024 aid package for Ukraine, Israel and Indo-Pacific allies; in 2026 filed a war powers resolution to stop U.S. military action in Iran.

Backed NATO and other alliances and proposed repealing the post-9/11 authorization for military force.

Backed U.S. military action against Iran, saying "We should drive this to its finish," and said "I think we should stand with Israel."