A gunman opened fire on New Year revelers at a packed nightclub on the shores of Istanbul's Bosphorus waterway on Sunday.
A pair of suicide bombings minutes apart hit a Baghdad market on Saturday, killing 28 people and wounding at least 54.
Two bombs claimed by Islamic State killed 25 people in central Baghdad on Saturday.
Further investigation has shown that the arrested person was not a wanted contact of Anis Amri, an official said.
Attackers drove a car into a government building in China's far western region of Xinjiang and set off an explosive device.
German authorities detained a Tunisian man who may have been involved in last week's attack on a Berlin Christmas market.
Ian Bremmer, Eurasia Group, provides insight to Germany's immigration policies, Brexit, U.S. dollar vulnerability, and Trump's tweet on the UN's Israel vote.
Amri's nephew was among the three men and had been in touch by social media messaging with Amri, authorities said.
The State Department declined to comment on specific requests from the Trump transition team.
Hijackers forced an airliner to land in Malta then freed all their hostages and surrendered after declaring their loyalty to Libya's late leader Muammar Gaddafi.
Italy's interior minister says the suspect in the Berlin Christmas market truck attack was killed in a shoot-out with police.
Police patrol stopped Anis Amri early Friday morning, who then took out a pistol and opened fire, injuring one of the officers.
James Woolsey, Trump senior advisor, talks about Donald Trump's tweet to expand the U.S. nuclear arsenal.
CNBC's Chery Kang weighs in on the latest in Asian markets.
Australian police said on Friday they had foiled a plot to attack prominent sites in the city of Melbourne.
Trump had "talked about that on the campaign trail," the newly named counselor to the president tells CNBC. "It's part of why he won."
Officials say the four people arrested were in contact with a 24-year-old Tunisian suspect.
German police arrested four people who had been in contact with a Tunisian suspect in the Berlin market attack, media reports said.
Facebook's Safety Check has come under fire for describing Berlin incident as an "attack" before police confirmation.
BRUSSELS, Dec 21- The European Commission proposed tightening controls on cash and precious metals transfers from outside the EU on Wednesday, in a bid to shut down one route for funding of militant attacks on the continent. It is part of an EU "action plan against terrorist financing" unveiled after the bombings and shootings in Paris in November 2015.