French Socialist Party presidential primary, 2017 In the second round run-off to select the Socialist Party's candidate in this year's spring presidential election, the leftist candidate, former Minister of National Education Benoît Hamon, topped former Prime Minister Manuel Valls, a centrist, with 58.65 percent of the vote.
2017 Romanian protests In the largest protest since the 1989 Revolution, more than 90,000 people march through Romania's capital and other cities against a government proposal to pardon thousands of prisoners.
Executive Order 13769 White House Chief of Staff Reince Priebus states that people from the affected countries who have been lawfully admitted for permanent residence, i.e. have a green card, will not be prevented from returning to the United States.
U.S. federal judges in the states of Massachusetts, Virginia, and Washington sign orders halting implementation of parts of the executive order.
Quebec City mosque shooting A gunman opens fire at a mosque in Quebec City, Canada, during evening prayers. At least five people were killed. Two suspects were apprehended; one was later released.
Insurgency in the North Caucasus At least three suspected militants are killed by Russian security forces during a firefight in Khasavyurt, Dagestan.
Syrian civil war The Syrian Army recaptures all of the towns and villages in the Barada river valley near Damascus from rebel forces.
Yemeni Civil War (2015–present) A U.S. military raid takes place in Yemen's southern Al Bayda Governorate. According to medics on the scene as reported by Reuters, "around 30" were killed, among which were at least three senior Al-Qaeda members, at least one U.S. service member, and 10 women and children.