The briefing for Wednesday, August 19.

The United Arab Emirates suspended all trade with Iran on Wednesday after coming under renewed ballistic missile fire, marking a sharp escalation after weeks of relative calm. Nationwide shelter warnings sounded across the UAE Tuesday night, the first such alarm in weeks, after two missiles splashed down in the Persian Gulf. The UAE's Foreign Ministry cited "regional escalations that undermine regional and international peace and security" in announcing the halt to trade, commercial exchanges and financial transactions with Iran.

The UAE has served as a critical economic lifeline for Iran throughout the conflict, functioning less as a producer of goods Iran needs and more as a re-export hub that has helped Tehran absorb the shock of sanctions and blockade, according to Mohammad Farzanegan, a Middle Eastern economics professor at Germany's University of Marburg. Cutting off that channel further isolates an already besieged Iranian economy.

The escalation comes as President Trump said the US has no talks planned with Iran, even as the 60-day negotiating window between Washington and Tehran closed without a deal. Trump has also threatened to bomb Oman if it "gets in the way" of a deal Oman and Iran are negotiating to manage Strait of Hormuz shipping traffic — a threat that drew a pointed rebuke from Iran's deputy foreign minister. Ship traffic through the strait fell 19.5% last week, with only three vessels crossing on Sunday, and a projectile strike on a ship near Oman left one crew member reported injured.

Iran-backed Houthi rebels also claimed drone strikes on a Saudi Aramco refinery, opening another potential front. With no resolution in sight and oil markets already jittery over reduced Hormuz traffic, the UAE's trade suspension signals the conflict is far from winding down and could further strain global energy supplies.

The Justice Department has charged 17 Iranians for allegedly running a decade-long cyberespionage campaign that stole more than 31 terabytes of data worth an estimated $3.4 billion from US universities, government agencies and private companies. Members of the Iran-based Mabna Institute allegedly targeted 144 American universities and 42 private-sector firms starting around 2013, continuing until at least December 2017, according to the DOJ.

Many of the attacks were carried out on behalf of Iran's Islamic Revolutionary Guard Corps, as well as for other Iranian government and university clients, the department said. The group targeted roughly 100,000 academic accounts worldwide and successfully compromised 8,000 professor email accounts at US universities alone, along with employee accounts at five federal and state government agencies and companies across Germany, Italy, Switzerland, Sweden and the UK.

FBI Assistant Director James C. Barnacle Jr. described the campaign as "a serious threat to our national security," and the department is offering a $10 million reward for information leading to five of the alleged hackers who remain at large. Nine of the 17 charged Tuesday had previously faced charges in a 2018 indictment.

The case underscores how state-linked cyber operations have become, as US Attorney Jamie McDonald put it, "a central instrument of national power." Coming amid the broader US-Iran military standoff, the indictment adds another dimension to an already tense relationship, highlighting years of clandestine intellectual property theft alongside the current battlefield confrontation.

Congo's Ebola outbreak has reached 5,021 cases and 2,378 deaths as of Sunday, according to the country's Ministry of Health, making it the nation's deadliest outbreak on record and the fastest-spreading Ebola outbreak ever documented. The outbreak has already surpassed the death toll of Congo's 2018-2020 outbreak, which killed 2,299 people out of 3,481 cases.

The World Health Organization says the current outbreak is spreading roughly three times faster than the 2014-2016 West Africa outbreak, which killed more than 11,000 people and remains the deadliest on record globally. WHO Director-General Tedros Adhanom Ghebreyesus warned Tuesday that "the epidemic is far from being under control" and that the risk of further national and international spread remains high.

The response is being hampered by insecurity, displacement and population movement in Ituri province, one of Congo's most volatile regions. Health workers have faced violence, including a mob attack Monday that set fire to an ambulance after a suspected case was reported. Some health workers have also gone on strike over unpaid wages, according to a nurse in Bunia who described the toll of exhaustion and poor working conditions.

A key complicating factor is the lack of any approved vaccine or treatment for the Bundibugyo virus strain responsible for this outbreak, unlike the more common Ebola strain for which vaccines exist. Aid workers say community engagement remains inadequate, with many residents in affected areas still unaware of symptoms or protocols, raising fears the outbreak could continue to outpace containment efforts.

President Trump announced a three-day pause on 50% tariffs against Canada less than two hours before they were set to take effect Wednesday, saying the two countries have reached a deal "subject to the finalization of documents." The tariffs, on nearly $20 billion of Canadian imports including wine, dairy, cement and hockey equipment, had threatened to further strain relations between the two close trading partners.

Trump and Canadian Prime Minister Mark Carney spoke twice this week as negotiators worked through disputes over auto tariffs and provincial bans on American liquor sales. A White House proclamation said Canada had committed to removing measures Washington considers discriminatory against US alcohol, dairy and vehicle exports, though Canada did not immediately confirm those specifics; Carney's office said "substantial progress" had been made but that important work remained.

Trump also floated reviving the Keystone XL pipeline as part of a broader deal, writing on Truth Social that the project "may be awoken from the grave" after being blocked by the Obama and Biden administrations. The pipeline, which would carry 830,000 barrels of oil a day from Alberta to the US, has long been opposed by environmentalists and Indigenous groups.

The deal averted a fight that businesses on both sides of the border warned would be costly — the US Chamber of Commerce noted that 13 million American jobs depend on trade under the US-Mexico-Canada Agreement. Canada had threatened retaliatory tariffs of its own, and nearly 72% of Canada's goods exports go to the US, underscoring how much both economies had riding on avoiding a rupture.

South Korea's military confirmed this week that its annual Ulchi Freedom Shield exercise with the United States will end six days early, on August 21 instead of the originally planned August 27, after what Seoul described as a "proposal from the US side." The joint field training component will also be scaled back, though specific details are still being worked out.

Trump had ordered his Pentagon chief to "substantially reduce" the drills just before they began Monday, citing his relationship with North Korean leader Kim Jong Un and South Korea's refusal to join the US military campaign against Iran. "These exercises are not only costly... but send a signal that is totally inappropriate and hostile," Trump wrote on Truth Social. South Korean officials said they were not informed in advance of Trump's plans.

The move comes as US officials tell the Wall Street Journal that Trump is pushing aides to arrange an in-person meeting with Kim, possibly during a November trip to Asia. Many analysts are skeptical Kim will embrace the overture without major concessions, noting he has shunned talks since 2019 and has built up his military and ties with Russia in the interim. North Korea's state media has meanwhile denounced the drills as "frantic" and "extremely dangerous."

Experts warn the reduction could weaken the decades-old US-South Korea alliance and delay a planned transfer of wartime operational control to a South Korean-led command. South Korean President Lee Jae Myung has stressed the importance of a "solid" alliance, while conservative critics accuse his government of prioritizing renewed Trump-Kim diplomacy over immediate security concerns.

Prosecutors in the murder case against Tyler Robinson argued in a court filing Tuesday that an engraved bullet reading "Hey Facist! CATCH!" found in the suspected weapon demonstrates that conservative activist Charlie Kirk was targeted because of his political views. Robinson, 23, faces aggravated murder charges in Kirk's September 10 shooting at Utah Valley University and has not yet entered a plea.

Whether the killing was politically motivated is central to prosecutors' push for the death penalty, one of several aggravating factors under dispute, along with whether the shooting endangered the thousands of attendees at Kirk's event. Prosecutors also cited a text message allegedly sent by Robinson stating "I had enough of his hatred. Some hate can't be negotiated out," and a note allegedly left for his roommate, Lance Twiggs, saying he "had the opportunity to take out Charlie Kirk, and I took it."

Defense attorneys have pushed back, arguing the text message alone is insufficient to prove political motivation and disputing DNA evidence presented during a five-day preliminary hearing in July that allegedly linked Robinson to both the weapon and an engraving tool. They have also argued against the endangerment enhancement, saying the shooter "hit the intended target."

Judge Tony Graf is expected to rule on whether the case proceeds to trial after hearing further arguments from both sides on September 1. The case has drawn national attention given Kirk's role, through Turning Point USA, in mobilizing conservative youth voters who helped elect President Trump to a second term.