Police officers detain demonstrators in St. Petersburg, Russia, on Sept. 21, following calls to protest against the partial mobilization announced by President Vladimir Putin. Putin called on Russian military reservists, saying his promise to use all military means in Ukraine was "no bluff," and hinting that Moscow was prepared to use nuclear weapons. Olga Maltseva/AFP/Getty Images hide caption
A man crosses the Central Intelligence Agency (CIA) seal in the lobby of CIA Headquarters in Langley, Virginia, on Aug. 14, 2008. Saul Loeb/AFP via Getty Images hide caption
Former President Donald Trump is displayed on a screen during a meeting of the Select Committee to Investigate the Jan. 6 Attack on the U.S. Capitol on Monday. Al Drago/Pool/Getty Images hide caption
One of the warehouses where stockpiled medicine, and medical supplies, are kept. U.S. Department of Health and Human Services Administration for Strategic Preparedness and Responses hide caption
TikTok's parent company, ByteDance, is based in China. That has stoked concerns about data privacy. Kiichiro Sato/AP hide caption
Bans on the social media app TikTok are beginning to gain momentum in Washington and several states. Experts say there's not much solid evidence that TikTok poses a national security threat. Drew Angerer/Getty Images hide caption
A Patriot missile launcher seen in Poland in March. Evan Vucci/AP hide caption
Representative Bennie Thompson, a Democrat from Mississippi and chairman of the House Select Committee to Investigate the January 6th Attack on the US Capitol, center, speaks during a hearing in Washington, DC, US, on Monday, Dec. 19, 2022. Al Drago/Bloomberg via Getty Images hide caption
The National Cryptology Museum opened in Fort Meade, Md., and features encryptic devices used by the National Security Agency. Keren Carrión/NPR hide caption
Members of the Japan Ground Self-Defense Force disembark from a V-22 Osprey aircraft during a live-fire exercise at East Fuji Maneuver Area in Gotemba, Shizuoka prefecture, Japan, on May 28. The annual live-fire drill took place as Japanese Prime Minister Fumio Kishida pledged to boost defense spending after a summit with U.S. President Biden and other "Quad" leaders. Tomohiro Ohsumi/Getty Images hide caption
Virginia Republican Glenn Youngkin on Friday became the latest governor to ban the TikTok app from state agency devices. Alex Wong/Getty Images hide caption
Former U.S. President Donald Trump speaks at the Conservative Political Action Conference (CPAC) at the Hilton Anatole on Aug. 06 in Dallas, Texas. Brandon Bell/Getty Images hide caption
Russian President Vladimir Putin Mikhail Metzel/SPUTNIK/AFP via Getty Images hide caption
People wait at the New York State Department of Motor Vehicles office at Atlantic Center in the Brooklyn borough of New York on December 18, 2019. Angela Weiss/AFP via Getty Images hide caption