Much of the fleet of electronic voting machines in the United States was designed without security in mind, in response to the last big national flap over an election in 2000. Marcus Marritt for NPR hide caption
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National Security
Saturday
Tents at a temporary holding facility for migrants in El Paso, earlier this year. Under President Trump, the Department of Homeland Security focus has shifted increasingly towards immigration and border enforcement. Paul Ratje/AFP/Getty Images hide caption
Friday
A commercial satellite image from the company Maxar (bottom); the image tweeted by President Trump (top) appears to be of better quality. (Bottom) Satellite image ©2019 Maxar Technologies; (top) @realDonaldTrump hide caption
Khalid Sheikh Mohammed, seen shortly after his capture during a 2003 raid in Pakistan, is accused of masterminding the Sept. 11, 2001, terrorist attacks that killed nearly 3,000 people. AP hide caption
Pakistan's Prime Minister Imran Khan meets U.S. Special Envoy Zalmay Khalilzad (left) in Islamabad on Aug. 1. Khalilzad met Khan ahead of peace talks in Qatar with the Taliban. Press Information Department via AP hide caption
Participants sign in at a Democratic Party caucus at Jackson Township Fire Station in Keokuk, Iowa, on Feb. 1, 2016. The DNC has scrapped a virtual caucus plan for 2020. Michael B. Thomas/AFP/Getty Images hide caption
DNC Recommends Scrapping Plans For Virtual Iowa, Nevada Caucuses Over Security
Wednesday
James Mattis, then U.S. secretary of defense, leaves a news conference following a meeting about U.S.-China diplomacy and security at the State Department in Washington, D.C., in June 2017. Mattis' new book, Call Sign Chaos, implies criticism of President Trump without taking direct shots at him. Andrew Harrer/Bloomberg via Getty Images hide caption
The USS Green Bay anchored just outside Port Moresby, Papua New Guinea, last year. Earlier this month, China refused to allow the Green Bay a port call at Hong Kong. Mark Schiefelbein/AP hide caption
Tuesday
Homes in the Cantera area of San Juan, Puerto Rico, are covered with FEMA tarps after Hurricane Maria. The island is now bracing for another major storm. Carlos Giusti/AP hide caption
Monday
The director of the National Security Agency, Gen. Paul Nakasone, often speaks about "persistent engagement" as a way to keep up pressure on adversaries in cyberspace. Since he took over last year, the spy agency has been pursuing a more assertive approach. Evan Vucci/AP hide caption
'Persistent Engagement': The Phrase Driving A More Assertive U.S. Spy Agency
Straphangers wait for an L Train in New York City as it pulls into the First Avenue station. A bill under consideration might bar New York from replacing these cars with Chinese-made ones. Mark Lennihan/AP hide caption
Friday
U.S. Customs and Border Protection intercepted and seized 52,601 illegal firearms parts from China in recent months. U.S. Customs and Border Protection hide caption
Russian President Vladimir Putin, shown here at the Kremlin in Moscow on Thursday, said on Friday that Russia should respond in kind to the testing of a new U.S. cruise missile. Alexander Zemlianichenko/AFP/Getty Images hide caption
Thursday
Authorities in Southern California seized a stockpile of high-powered firearms, ammunition and tactical gear from the property of Rodolfo Montoya, who authorities say had been planning a mass shooting because of a dispute involving his work's human resources department. Long Beach Police Department hide caption
South Korea has announced it will withdraw from a 2016 military intelligence-sharing pact with Japan. Here, South Korean Foreign Minister Kang Kyung-wha, center, and Japanese Foreign Minister Taro Kono, trailing at left, walk in Beijing's Great Hall of the People on Thursday. HOW Hwee Young/AFP/Getty Images hide caption