At least 17 people were shot and killed at Marjory Stoneman Douglas High School in south Florida on Wednesday, authorities said.

Police responded to an incident at the school, located in the city of Parkland, around 3:15 p.m. ET. One shooter is believed to have carried out the attack, in the school's freshman building. The suspect, identified as 19-year-old Nikolas Cruz, was taken into custody "without incident," Broward County Sheriff Scott Israel said. The suspect was a former student of the school who had been expelled; one teacher told The Miami Herald that Cruz had been identified last year as "threatening students."

About 3,000 students attend the school, which is described as being in "an affluent Fort Lauderdale suburb," The New York Times writes.

Drone footage of the scene showed handfuls of students fleeing on foot. "My prayers and condolences to the families of the victims of the terrible Florida shooting," President Trump tweeted. "No child, teacher, or anyone else should ever feel unsafe in an American school." The Week Staff

This is a breaking news story and has been updated throughout.

The White House is understandably relieved about Special Counsel Robert Mueller's Russia investigation concluding with no more indictments or evidence of criminal conspiracy by President Trump or his campaign. Trump's 2020 re-election campaign is aggressively fundraising off of the report, or at least the four-page summary released by Attorney General William Barr on Sunday. But as veteran newsman Dan Rather pointed out, the positive headlines may not be the end of the story.

"Even if the actual Mueller report is anything like the attorney general's summation of its contents, Russiagate will go down as one of the biggest scandals in American political history," argues Franklin Foer at The Atlantic:

The Mueller investigation has been an unmitigated success in exposing political corruption. In the case of Paul Manafort, the corruption was criminal. In the case of Trump, the corruption doesn't seem to have transgressed any laws. As Michael Kinsley famously quipped, "The scandal isn't what's illegal; the scandal is what's legal." Lying to the electorate, adjusting foreign policy for the sake of personal lucre, and undermining an investigation seem to me pretty sound impeachable offenses — they might also happen to be technically legal. [Franklin Foer, The Atlantic]

Among other things, "Mueller has also provided a plausible answer" to why Trump "couldn't stop praising Vladimir Putin," and still sides with the Kremlin over the U.S. government, Foer writes. "Trump's motive for praising Putin appears to have been, in large part, commercial," and his mendacious attempts to use the campaign and U.S. foreign policy to enrich himself "is the very definition of corruption, and it provides the plot line that runs through the entirety of Trump’s political life." Read Foer's entire argument at The Atlantic. Peter Weber

According to Attorney General's summary of Special Counsel Robert Mueller's final report, as well as previous Mueller court documents, Russia ran two sophisticated campaigns to interfere in the 2016 U.S. presidential campaign on President Trump's behalf. But you wouldn't know that from the "gloating" that's "already begun in Moscow," says Nathan Hodge at CNN.

"In short, Russia did not elect Trump," Evgeny Popov, co-host of a pro-Kremlin political talk show, tweeted. "Mueller did not find evidence of collusion between Trump's team with Russia. The U.S. attorney general submitted a 4-page report on the special prosecutor's investigation report to Congress. D is for Disappointment." Alexey Pushkov, a high-profile Russian senator, called Democrats "conspiracy theory maniacs."

On CNN Sunday night, former counter-intelligence officer Steve Hall posited one reason for Russia to cheer the Mueller report. "The Russians are probably a bit surprised at how broad they can go, and next time they go against us in a hybrid-warfare type of fashion, at the very least in 2020, they’ll know that they can probably push a little bit further," he told Don Lemon. "What they’ve learned is due to our system of justice, due to our open society and how things work here, they actually have a lot more room to work with, and still people aren’t going to be thrown into jail — or, at least, the most important people aren't going to be accused of the worst things."

In fact, the danger Russia poses to America's democracy seems to be the one thing both parties — at least in Congress — can agree on from Mueller's report. Senate Majority Leader Mitch McConnell (R-Ky.) welcomed Mueller's "contributions to our efforts to understand better" Russia's "dangerous and disturbing" and "ongoing efforts to interfere with our democracy." The No. 2 Senate Republican, Sen. John Cornyn (R-Texas), said the Russians "have and always will try to create problems for democracies. We need to expose it and defeat it." Peter Weber

The obvious highlight for President Trump from Attorney General William Barr's four-page summary of Special Counsel Robert Mueller's investigation is this sentence from Mueller's report: "[T]he investigation did not establish that members of the Trump campaign conspired or coordinated with the Russian government in its election interference activities," expressly or tacitly. Translated by Trump and his circle, that reads: NO COLLUSION.

But "Trump's triumphant supporters notwithstanding, we don't yet know what that means," former federal prosecutor Ken White explains at The Atlantic:

When prosecutors say that an investigation "did not establish" something, that doesn't mean that they concluded it didn't happen, or even that they don't believe it happened. It means that the investigation didn't produce enough information to prove that it happened. Without seeing Mueller's full report, we don't know whether this is a firm conclusion about lack of coordination or a frank admission of insufficient evidence. [Ken White, The Atlantic]

Barr also cites only Mueller's lack of evidence that the Trump campaign conspired or coordinated with "Russia's government," William Saletan notes at Slate. This would appear to leave out several key interactions with Russians, like Trump campaign chairman Paul Manafort secretly giving reams of polling data to Konstantin Kilimnik, or Donald Trump Jr. and Jared Kushner meeting in Trump Tower with Kremlin-linked lawyer Natalia Veselnitskaya, who was purportedly offering dirt on Hillary Clinton.

Similarly, Barr limits the collusion exculpation to two specific Russian operations: the strategic, targeted manipulation social media and the hacking and dissemination of emails from Clinton's campaign and the Democratic National Committee. Other apparent quid pro quo discussions "between Trump associates and Russians, such as Trump's Moscow tower project and Michael Flynn's secret talks about easing sanctions, have been set aside," Saletan argues. Barr's letter "doesn't show that Trump is innocent of collusion or obstruction. It shows that collusion and obstruction were defined to exclude what he did." Peter Weber

House Speaker Nancy Pelosi (D-Calif.) and Senate Minority Leader Chuck Schumer (D-N.Y.) released a joint statement on Sunday, saying that the letter Attorney General William Barr sent to Congress giving his summary of Special Counsel Robert Mueller's report "raises as many questions as it answers."

According to Barr's letter, Mueller's report does not exonerate President Trump "on a charge as serious as obstruction of justice," and this "demonstrates how urgent it is that the full report and underlying documentation be made public without any further delay," the Democratic leaders said. "Given Mr. Barr's public record of bias against the special counsel's inquiry, he is not a neutral observer and is not in a position to make objective determinations about the report."

Pelosi and Schumer are referring to a memo Barr wrote last year and sent to senior Justice Department officials in June. Barr, at the time a private citizen, wrote that he thought Mueller's investigation into obstruction of justice was "fatally misconceived." Trump nominated Barr after firing former Attorney General Jeff Sessions in November.

After the letter was released, Trump erroneously stated that the Mueller report "completely exonerated" him, and Pelosi and Schumer said Trump's statement "is not to be taken with any degree of credibility. Congress requires the full report and the underlying documents so that the committees can proceed with their independent work, including oversight and legislating to address any issues the Mueller report may raise. The American people have a right to know." Catherine Garcia

America's sharp polarization over President Trump has, fairly or unfairly, become incarnate in the marriage of George and Kellyanne Conway — a conservative lawyer who uses Twitter to vent about his disappointments with Trump and concerns about the president's mental health, on one hand, and Trump's senior counselor and most steadfast defender on cable news. The Conways had predictably different takeaways from Attorney General Robert Barr's four-page summary of Special Counsel Robert Mueller's final report on Russian interference in the 2016 election and any wrongdoing by the Trump campaign.

George Conway focused on the part of Barr's report that quotes Mueller as explicitly saying his report "does not exonerate" Trump of criminal obstruction of justice, suggesting that maybe America should have a higher bar for the presidency.

Kellyanne Conway ignored the part of the letter that explicitly did not exonerate Trump and focused instead on Mueller finding insufficient evidence to conclude Trump or his campaign colluded or conspired with the Russian government. In that sense, Mueller's unreleased report was "a gift for the 2020 election," Conway wrote, under a photo of Trump with his arm around her waist.

Former FBI Director James Comey, who appears to be living his best life, is focusing on nature and reserving judgment about Mueller's report.

Hopefully, the Conways get opportunities to set work aside for a salubrious walk in the woods, too. Peter Weber

Jordan Peele's sophomore film, the horror flick Us, had a stunning opening weekend, bringing in an estimated $70.3 million in North American ticket sales.

The movie, which cost $20 million to make, soared above debut weekend forecasts of $38 to $45 million. Us had not only the largest debut for an original horror movie, but also one of the biggest openings for a live-action original film since Avatar came out in 2009.

Peele's directorial debut, 2017's Get Out, brought in $33.4 million in its domestic opening weekend. Captain Marvel, having spent the last two weeks at the top of the box office, fell to second place, with $35 million in ticket sales. Catherine Garcia