Defense Secretary Pete Hegseth is testifying before a Senate panel today at 11:30 AM PDT, alongside other administration witnesses. The U.S.-Iran conflict is now in its second week, and lawmakers want answers about the expanding military operation across the region. The hearing, scheduled July 21, 2026, comes after a ceasefire fell apart, Iran-aligned groups joined the fighting, and American troops were killed.

The fighting restarted around the week of July 10, when a ceasefire between the United States and Iran broke down. By July 14, the U.S. had launched multiple strikes on Iran, and Iran fired back at American targets in the region. President Trump ordered a new blockade on Iran. The exchanges of fire got worse through July 16, when both sides traded strikes for a full week, undoing the truce that had held the previous month (Reuters).

Iran warned during that escalation that the Strait of Hormuz is a "red line" and vowed to "resist until the end" (Reuters). The Strait of Hormuz is a narrow strip of water between Iran and Oman where about a fifth of the world's oil passes through every day. Threats to shut down that waterway have come up in past Iran crises, and now they add the risk of oil disruptions to what had been a military fight.

Trump increased U.S. air strikes on Iran as the ceasefire fell apart. Analysts cited by Reuters doubted that more attacks would push Iran's leaders toward giving ground, though the administration has kept intensifying its approach (Reuters).

By July 20, the U.S. had struck Iran for a ninth day in a row. Another American was confirmed killed, which put the question of casualties and presidential war powers front and center for the Senate (Reuters). War powers refers to the rules that decide whether a president can order military action on their own or needs Congress to approve it. The conflict also opened a new front that same day: the Houthis, an Iran-aligned group based in Yemen, announced a naval blockade on Saudi Arabia, spreading the fighting beyond the U.S. and Iran (Reuters).

The C-SPAN schedule for today lists Hegseth alongside other witnesses testifying before a Senate panel, though the specific committee and full witness list were not in the scheduling notice (C-SPAN). The hearing gives senators their first chance to publicly question the Defense Department about the conduct, legal basis, and direction of the Iran campaign since the ceasefire collapsed.

Sen. Chris Murphy (D-Conn.) talked about both the escalating conflict and Hegseth's upcoming testimony in an interview with NPR's Michel Martin broadcast on Morning Edition today. Murphy sits on the Senate Foreign Relations Committee and has long focused on war powers and Congress's role in approving military action (NPR).

The broader context here is a conflict that has grown in almost every way: it has lasted longer, hit more targets, pulled in more groups, and cost more lives. The U.S. has now conducted nine straight days of strikes. Iran has fired back at American targets. The Houthis have opened a separate naval front against a U.S. partner. An American service member has been killed. And the Strait of Hormuz, the most important oil shipping route in the world, has been directly threatened by Iran.

For senators at today's hearing, the questions are stacked. They want to know what legal authority the administration is using to keep striking another country without a new vote from Congress. They want to know what the Pentagon's actual goal is, especially since analysts doubt that escalating will make Iran give in. They want to know how U.S. troops will be protected across multiple areas now that the Houthis have blockaded Saudi Arabia. And they want to hear any plan the administration has for calming the situation or returning to diplomacy. Hegseth's testimony, along with the other witnesses, will be the first public forum where the Senate can ask those questions since the truce collapsed and the shooting started again.