US politics as it happened: Suspect's manifesto revealed; Shooting suspect 'likely targeting Trump'; King Charles' US state visit will go ahead; FBI going door to door in suspect's neighbourhood

Thanks for joining our live coverage of the fallout from the Washington DC shooting scare and the ongoing crisis in the Middle East.

Here are the key events from today.

The suspected gunman was likely targeting US President Donald Trump and other officials when he burst through a security checkpoint at the Hilton Hotel in Washington, the US Attorney General has said.

Trump, meanwhile, lashed out during an interview with 60 Minutes US, calling reporter Norah O'Donnell a "disgrace" after she read out part of the suspected shooter's manifesto on air to question the president about it.

Iranian Foreign Minister Abbas Araghchi has landed in Russia for a meeting with President Vladimir Putin after visits to Oman and Pakistan.

While negotiations with the US appear to have stalled, Tehran has reportedly proposed reopening the Strait of Hormuz but delaying talks on nuclear energy in a deal that would also involve the US lifting its naval blockade.

The Washington shooting suspect's brother contacted police in Connecticut hours after shots were fired outside the White House Correspondents Dinner.

Cole Allen's brother contacted police in New London, Connecticut, after receiving a manifesto about the violence, according to the law enforcement official, who was not authorised to discuss the ongoing investigation and spoke on condition of anonymity.

The New London Police Department said in a statement it was contacted at 10.49pm, about two hours after the shooting, by an individual who wanted to share information related to it.

The police department said it then immediately notified federal law enforcement.

Allen's sister, who lives in Maryland, told investigators her brother had legally purchased several weapons from a California gun store and kept them at their parents' home in Torrance without their knowledge, according to the official.

She described her brother as prone to making radical statements, the official said.

Sirens have blared across northern Israel after a drone was detected travelling from Lebanon.

Multiple rounds of sirens sounded across Arab al-Aramshe, in the Western Galilee region near the border with Lebanon, in the last hour, after the IDF said it detected a "hostile aircraft infiltration".

"The contact with the target that was launched from Lebanon toward Israeli territory was lost," the IDF said in a post to Telegram.

No injuries were reported.

"Missile and rocket alerts were activated due to concerns of falling interception debris," the post read.

Another siren sounded about 25 minutes later, but it was found to be a false alarm, the IDF said.

Israel demanded residents from several villages in southern Lebanon evacuate overnight, ahead of strikes against Hezbollah targets.

Israeli forces also raided the entrance to Kafra, in southern Lebanon, at dawn today, cutting off the road to the town, according to Lebanon's National News Agency.

A White House Correspondents Dinner guest who went viral overnight for casually picking at his meal while diners around him frantically ducked for cover when gunshots rang out says he didn't want to get his "new tux on the dirty Hilton floor".

Creative Arts Agency agent Michael Glantz was one of more than 2000 people inside the ballroom at the Washington Hilton when the sound of gunfire sent the room into chaos just after 8.30 pm local time.

In now viral footage, a seemingly unfazed Glantz stood out for remaining seated at his table, tucking into his burrata pea salad while other guests screamed and hid under tables.

The footage led to Glantz being nicknamed the 'salad man'.

"I'm a New Yorker," Glantz told the New York Times.

"We live with sirens and activity happening all the time. I wasn't scared. There are hundreds of Secret Service agents hurtling themselves over tables and chairs, and I wanted to watch."

Glantz clarified he had a "bad back" and couldn't get on the floor.

"I couldn't get on the floor, and if I did get on the floor, they'd have to bring in people to get me off the floor," he said.

"And No. 2, I'm a hygiene freak. There was no freaking way I was getting in my new tux on the dirty Hilton floor. It was not happening."

Iranian Foreign Minister Abbas Araghchi said his trip to Russia offered an opportunity to coordinate with Moscow after the war with Israel and the United States.

The country's top diplomat arrived Monday in St Petersburg ahead of a meeting with Russian President Vladimir Putin.

In a pre-taped interview posted by the state-run IRNA news agency, Araghchi said the meetings were a chance to consult with Russia over the war amid collapsed talks with the U.S.

"It is a good opportunity for us to consult with our Russian friends about the developments that have occurred in relation to the war during this period and what is happening now," he said.

Araghchi has visited Islamabad twice and Muscat, Oman, on the foreign trip as negotiations with the U.S. appear stalled over the Iran war.

Araghchi said it was America's approach that "caused the negotiations to be delayed" that had been planned in Islamabad.

"The previous one, despite the progress that had been made, could not achieve its goals," he said, blaming what he called Washington's "excessive demands."

Trump has questioned who is in charge in Iran at the moment and said confusion within its theocracy made it difficult to reach a deal.

President Trump and First Lady Melania Trump were introduced to the WHCA dinner just minutes before the alleged gunman opened fire in the foyer area of the Washington Hilton.

The pair was introduced at 8.16pm (10.16am AEDT), before a military band played and guests stood for the national anthem before dinner.

At 8.34 pm, the First Lady and White House Press Secretary Karoline Leavitt took part in a magic trick with mentalist Oz Pearlman.

Seconds later, a loud disturbance was heard and chaos erupted inside the ballroom.Heavily armed law-enforcement agents flooded the ballroom around 8.35 pm local time as Trump was surrounded and rushed off stage.

Read the full minute-to-minute timeline of the 24 hours surrounding the shooting here.

Iranian state media has reported Foreign Minister Abbas Araghchi has arrived in St Petersburg to meet with Russian President Vladimir Putin.

It follow's Araghchi's visit to Pakistan, which he called "very fruitful".

Iran's ambassador in Moscow, Kazem Jalali, confirmed the upcoming meeting as part of a "diplomatic jihad".

"Coordinating interactions and advancing joint programs at the regional and international levels is the most important agenda of this trip," Jalali said in a post on X.

"Iran and Russia are present in a united front in the campaign of the world's totalitarian forces against independent and justice-seeking countries, as well as countries that seek a world free from unilateralism and Western domination."

Trump's interview with 60 Minutes struck an unusually - if limited - conciliatory tone when he talked about how the attendees at the interrupted gala intermingled.

Trump and his administration make a virtue out of fighting with the press, and his base eats it up.

And in the interview, he kept up his usual attacks, including blasting his interviewer as a "disgrace", and claiming the media on the whole was too liberal.

But he conceded it was unfortunate to see the gala dinner cancelled in this fashion.

He said he was pleased to see media people and White House people mingling in the aftermath of the shooting, sharing a common "spirit".

"I was really happy to see the … I don't know how long it'll last — the relationship, the friendship, the spirit after a very bad event took place," he said.

"Now, the event turned out to be much less bad because nobody was killed."

Axios is reporting Iran proposed to the US that they reopen the Strait of Hormuz but delay talks on nuclear energy.

The deal also reportedly involved the US lifting its naval blockade.

Among the cavalcade of casus belli the White House has given for its war, one of the key objectives has been to prevent Iran from having a nuclear weapon.

If Iran opens the strait and the US removes its blockade without a deal being reached on nuclear enrichment, the US would have little to offer at a later nuclear negotiation.

Strikes across Ukraine, Russian-occupied territory and Russia over the past day killed at least 16 people, authorities said Sunday as the 40th anniversary of the Chernobyl nuclear disaster prompted new warnings about risks posed by attacks near the plant during Russia's more than four-year invasion of its neighbour.

Ukraine's President Volodymyr Zelenskyy marked the anniversary with a warning that Russian attacks risk repeating history.

"Russia is once again bringing the world to the brink of a man-made disaster — Russian-Iranian Shaheds regularly fly over the plant, and one of them struck the confinement last year," he wrote on Facebook, referring to the Iran-designed drones that have wreaked havoc since Moscow launched its all-out war in February 2022.

"The world must not allow this nuclear terrorism to continue, and the best way is to force Russia to stop its reckless attacks," Zelenskyy said.