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North Korea has performed its fifth and potentially most powerful nuclear test yet. What do you need to know about it? CNN's Will Ripley has the answers.

The United States and Russia have announced a plan to bring about a ceasefire in Syria, US Secretary of State John Kerry said.

New video shows the USS Jackson, a littoral combat ship, completing its shock trials. The US Navy conducted the tests in July 2016.

Air travelers are being warned not to use their Samsung Galaxy Note 7 smartphones on planes after the company recalled the devices over complaints the batteries can catch fire.

It's not hackers breaking into your bank account that should scare you; it's the banks themselves. Details are now surfacing about more than 1.5 million unauthorized Wells Fargo bank and credit card accounts created on behalf of unwitting customers by bank employees hoping to cash in on new account bonuses.

Could North Korea actually put a nuclear warhead atop a rocket and fire it at a potential adversary?

A train traveling from the Spanish city of Vigo to Oporto in Portugal has "derailed causing deaths and injuries," according to officials.

Three young women who were planning an "imminent and violent" attack were arrested near Paris on Thursday, French Interior Minister Bernard Cazeneuve said.

North Korea's claim that it conducted its fifth and most powerful nuclear test has set the international community on edge yet again.

There are just over 15,000 nuclear weapons in the world and several ways countries can deploy them. Jim Sciutto explains the potentially catastrophic effect nuclear weapons can have and what technologies exist to defend against them.

The US Air Force is expected to start flying its "radiation sniffer" jet off the Korean Peninsula in the coming hours to take air samples to see if it can determine a nuclear event occurred in North Korea on Friday morning.

FIFA's former president Sepp Blatter faces an investigation into multiple allegations including bribery and corruption, the football governing body's ethics committee announced Friday.

An earthquake reported in North Korea is believed to be artificial, the South Korea Meteorological Administration said.

A dramatic rescue operation is underway for dozens of passengers trapped in cable cars high above the French Alps, authorities said.

According to new figures, more than 101 million passengers traveled through the world's busiest airport in 2015.

Elon Musk is still trying to pinpoint the source of a huge chain of explosions that destroyed SpaceX's Falcon 9 rocket last week at Cape Canaveral.