Senate Democratic Leader Chuck Schumer (N.Y.) blasted the Trump administration for postponing a classified briefing that was supposed to happen Tuesday afternoon on President Trump’s decision to bomb three Iranian nuclear facilities over the weekend.

Schumer said he didn’t receive an explanation for why the briefing was postponed but noted that delaying it until Thursday would give Secretary of Defense Pete Hegseth and Secretary of State Marco Rubio a chance to participate in the meeting.

“This last-minute postponement of our briefing is outrageous, it’s evasive, it’s derelict. They’re bobbing and weaving and ducking. Senators deserve full transparency. There is a legal obligation for the administration to inform Congress about precisely what is happening,” he told reporters at a press conference in the Capitol.

“What are they afraid of? Why won’t they engage Congress in the critical details?” he asked.

Schumer said senators want to know the results of the military strike and the scope and trajectory of the broader military conflict between Israel, Iran and now the United States.

He said Congress needs to know what Trump’s long-term strategy is for preventing Iran from obtaining nuclear weapons and the potential risks facing American citizens.

Senators were scheduled to hear Tuesday from Director of National Intelligence Tulsi Gabbard, CIA Director John Ratcliffe and Joint Chiefs of Staff Chair Gen. Dan Caine.

Schumer said that Gabbard, Ratcliffe and Caine should still give their briefing on Tuesday and that Hegseth and Rubio could meet with senators later in the week.

“If they want to come up on Thursday in addition, not in replacement, of this [briefing], that’s OK,” Schumer said.

He said the delay “undermines the very principles of accountability and oversight that safeguard our democracy.”

The Democratic leader said Caine “knows more about the military operation” against Iran than almost anybody else in government.

He said Congress is entitled to know how much of Iran’s nuclear stockpile was destroyed.

And he said the Trump administration provided no details when they gave him a heads-up about the military strike shortly before it happened on Saturday.

“They called me up and said, ‘We’re taking imminent action, we can’t tell you what country,’” Schumer recalled. “I said, ‘Can you give me some details?’ They said, ‘No.’ That’s the extent of the briefing I’ve gotten.”

He said he asked for a briefing on the strike yesterday but didn’t get it.