The Trump administration is likely to include some European countries in the in-cabin ban on gadgets larger than cellphones.
Washington considers Abu Mohammed al-Jolani to be one of the world's most wanted extremists.
The DHS would not confirm Wednesday whether an announcement revising its March policy, which targeted 10 Middle Eastern and African airports, was coming.
ISIS published an article titled "Just Terror Tactics" that, in part, describes how fighters can obtain weapons in the U.S.
Turkey and India's leaders pledged tightening economic and counterterrorism ties.
Trump called NATO "obsolete" before concluding it was "no longer obsolete" last month.
The Washington, D.C. area will Wednesday hold its first exercise preparing for a Paris-style terror attack.
The Al-Qaeda-affiliated militant group controls parts of Somalia and wants to impose its hardline version of Islam on the country.
Pope Francis is expected to address the International Peace Conference in Cairo at the end of April.
U.S. Secretary of State Rex Tillerson said Iran remained a leading state sponsor of terror.
An investigator has said right-wing extremists probably tried to trick people into thinking there was an Islamist militant motive.
Authorities said explosives in a tunnel causes the blast in the city of Diyarbakir, killing a police officer and two civilians.
Engineering and psychology research can help improve evacuation procedures in subway attacks, like the recent St Petersburg bombing.
The Reuters/Ipsos poll showed Americans were more reluctant to share personal information than when the poll last asked the question four years ago.
The suspect hired a sniper, who was an undercover FBI agent, to kill the pontiff during a 2015 visit.
The German Left Party's Sahra Wagenknecht accused Turkish President Recep Tayyip Erdogan of using being the "godfather of terrorism."
The motive was unclear in the Cincinnati shooting that took place at around 1 a.m. local time.