Up to 70,000 responders worked at Ground Zero in dangerous conditions after the attacks.
The EU's security landscape is worlds beyond what it was just two years ago.
At least 12 people have traveled from the school to the Middle East to fight for ISIS.
Jihadis are still battling three months after launching an armed offensive on the southern city.
Russia and the U.S. continue to trade claims about the most wanted militant in the world.
"As we saw in Charlottesville, this mission is more important than ever," George Selim said.
The head of the papal force says it is ready for any extremist attack.
Within less than a month since the order by the self-confessed "foot soldier of Putin," almost 1,000 divorced Chechen couples have reunited, state TV reported.
Four Lebanese-Australian brothers plotted to bring down a flight from Sydney to Abu Dhabi.
Indonesian police on Tuesday (Aug 15) arrested five suspected militants near the capital Jakarta.
Some 55 percent to 60 percent of reports this year related to alleged involvement with the Islamic State militant group (ISIS).
The decision has "effectively placed in jeopardy the future of Jewish life in Australia," said one leader.
Authorities in Sydney have made several arrests in connection with the extremist plot.
The three sought to attack police or a military target in Britain.
Former U.K. ambassador to Saudi Arabia William Patey blasted Saudi Arabia's "unhealthy" Salafi-Wahhabi Islam, saying it could promote extremism.
Police say the self-described nationalist planned to shoot the French president on Bastille Day, when Donald Trump will be Emmanuel Macron's special guest.
Without the oxygen of publicity, the attacker is just that: a killer with a car and a knife. The lone wolf needs the pack as much as the pack needs the lone wolf.
The Department of Homeland Security and the FBI had warned about vehicle-ramming attacks, but this method is usually associated with Islamist extremists and jihadis.