Greg Myre

The Obama administration began checking social media accounts of prospective Syrian refugees more than a year ago. Such steps could expand as President Trump prepares a new executive order on vetting.

McMaster first made his name as a captain in Iraq in 1991. Then, in 2007 he was a key figure in the "surge." Now, 26 years after he first went to Iraq, he'll be seeking a solution in his new post.

Iran and North Korea have fired off missiles. A Russian spy ship floats off the U.S. coast. To date, President Trump's reaction has been very much from the traditional foreign policy playbook.

Leaking classified information is a crime, but it's also one of the most popular sports in Washington. Candidate Trump encouraged leaks. President Trump calls them a crime.

Russia is at the center of recurring controversies swirling around the president. Yet he has consistently taken a softer line on Russia and hasn't spelled out his plans on a range of critical issues.

President Bush faced little resistance when he stiffened immigration rules. But after 15 years and few attacks, politicians, the public and the courts are pushing back against President Trump.

Charles Lindbergh became an instant hero when he flew across the Atlantic. But that wasn't his only moment of fame. He also created a hugely popular political movement — the America First Committee.

The Council on American-Islamic Relations filed suit against the Trump administration on Monday on behalf of 20 people affected by the new restrictions on travel to the U.S. Separately, protests continued around the country as opponents faulted what they called Trump's de facto Muslim ban. The White House rejected any religious dimension to the ban and cited the small number of people it has affected.

The new president's high-profile approach to fighting terror contrasts from the quieter strategy of his predecessor. Trump's style seeks bigger gains but could also mean taking bigger risks.

The White House plan names seven mostly Muslim countries, yet their nationals haven't carried out lethal attacks in the U.S. since well before Sept. 11, 2001.

The president met with the military brass and signed an executive action that calls for bulking up the military. He also signed a measure that freezes immigration from seven mostly Muslim countries.

President Trump wants complete victory over the Islamic State, which is on the defensive. But translating battlefield gains into a comprehensive political solution is still a daunting challenge.

Under President Obama, the detainee population has gone from 242 to 45. But he hasn't closed Guantanamo as pledged, and Donald Trump has called for more suspects to be sent to the prison in Cuba.

The Kremlin denied that it collects political dirt, known as kompromat. But disinformation, fake photos and leaked sex tapes have long been features of Russian politics.

West Bank settlements have expanded under every Israeli government over the past half-century. Nearly 10 percent of Israel's Jewish population now lives on land captured in the 1967 Six-Day War.

The secretary of state nominee has headed a global oil giant that has sometimes taken positions on Russia and other countries that were at odds with the U.S. government.

The Syrian leader is in his strongest position in years. He can claim control of the biggest cities, but the rebels are still a threat in the countryside and the Islamic State holds eastern Syria.

When the Soviet Union collapsed on Christmas Day 1991, it appeared Moscow would no longer dominate U.S. foreign policy. A quarter-century later, Russia has emerged as a hugely divisive presence.

New United Nations sanctions against North Korea ban the export of monuments. The impoverished Asian nation has made millions by building statues for African nations.

Trump has financial stakes in multiple countries where he'll face tough foreign policy choices. How does he separate U.S. interests from his business interests?