The U.S. Navy says a limpet mine put a hole in this Panama-flagged, Japanese-owned tanker anchored off Fujairah, United Arab Emirates. The limpet mines used to attack the tanker near the Strait of Hormuz resemble mines displayed by Iran, a Navy explosives expert said Wednesday. Iran denies being involved. Fay Abuelgasim/AP hide caption
The USS Arlington, shown in December in Morehead City, N.C., has been sent to the Middle East to bolster an aircraft carrier force sent to counter alleged threats from Iran. MC3 Chris Roys/Navy Office of Information/AFP/Getty Images hide caption
President Donald Trump hugs the American flag before his speech at the Conservative Political Action Conference. Jose Luis Magana/AP hide caption
Sen. Cory Booker of New Jersey addresses a crowd in New Hampshire, which happens to be a key early presidential primary state. Michael Swensen for The Boston Globe via Getty Images hide caption
Pope Francis spoke to the ambassadors to the Holy See on Monday. Vatican Pool/Getty Images hide caption
North Korean leader Kim Jong Un (left) has continued to go ballistic this year. China's President Xi Jinping has enshrined himself in the constitution. Fred Dufour/AP; Wong Maye-E/AP hide caption
President Trump discusses his national security strategy in a speech on Monday. Trump's strategy is built around four pillars: protecting the homeland, promoting prosperity, peace through strength, and advancing American influence. Mandel Ngan/AFP/Getty Images hide caption
During his tenure as president, Trump has signed a series of executive orders rolling back Obama-era regulations. Pool/Getty Images hide caption
George Papadopoulos, left, pleaded guilty earlier this month to lying to FBI agents about a series of meetings he took and planned while he was a foreign policy adviser to the Trump campaign. Costas Bej/Courtesy of The National Herald hide caption
Former Exxon Mobil executive Rex Tillerson testifies before the Senate Foreign Relations Committee on Jan. 11 during his confirmation hearing for secretary of state. Saul Loeb/AFP/Getty Images hide caption
President Trump and Defense Secretary James Mattis speak on Inauguration Day. Mattis travels to South Korea and Japan this week in the administration's first major foreign trip. Pablo Martinez Monsivais/AP hide caption
President-elect Donald Trump waits to step out onto the portico at the West Front of the U.S. Capitol for his inauguration. Patrick Semansky/AP hide caption
President Obama will leave the White House later this month. Colin Marshall/NPR hide caption
Donald Trump spoke at the American Israel Public Affairs Committee Conference in March when he was a candidate for the GOP presidential nomination. Saul Loeb/AFP/Getty Images hide caption
Russian President Vladimir Putin enters the St. George Hall of the Grand Kremlin Palace in Moscow. Sergei Ilnitsky/AFP/Getty Images hide caption