Jackie Northam

Updated at 2:30 p.m. ET

Large portions of Washington, D.C., were hit by power outages Tuesday, momentarily plunging the White House and other buildings into darkness.

The Pepco utility company says the culprit was a transmission line in southern Maryland that caused "a dip in voltage" shortly before 1 p.m. ...

Updated at 2:40 p.m. ET.

Several Arab-American groups have launched a website to help U.S. citizens trapped by the fighting in Yemen.

StuckInYemen.com was created after the advocacy groups began hearing from mostly Yemeni-American citizens who reportedly were being told by the U.S. State Department that there are currently no ...

If a final agreement is reached, crippling sanctions on Iran's oil industry could be lifted. But the oil sector faces a number of challenges before ramping up production.

A new United Nations report says that more than 25,000 fighters have left their homes bound for Iraq, Syria and other countries to join terrorist networks such as the self-proclaimed Islamic State and the al-Qaida-linked al-Nusra Front.

The report says the fighters hail from more than 100 countries worldwide,

Updated at 3:30 p.m. ET

Yemen's Houthi fighters and their allies seized a central area of Aden, capturing the presidential palace on a hilltop of the southern port city. The Shiite rebels took the area despite an eight-day air campaign by a Saudi-led coalition to stem the Houthis' advance.

From ...

The Iraqi government says its security forces have retaken Tikrit from militants with the self-proclaimed Islamic State. Recapturing the strategic city after a monthlong battle is considered a major setback for the jihadist group, also known as ISIS.

NPR's Alice Fordham, who returned from a short visit to Tikrit on ...

The U.S. wants to slap sanctions on cybercriminals. President Obama issued an executive order Wednesday creating the nation's first sanctions program to combat "malicious" cyberattacks and cyberspying.

President Obama said cyberthreats pose one of "the most serious economic and national security challenge" to the U.S., and that the executive ...

Dozens of countries have slid under Tuesday's deadline to join a China-backed infrastructure development bank that is opposed by Washington.

U.S. allies such as South Korea and Australia were among the more than 40 nations that signed up at the last moment as founding members of the Asia Infrastructure Investment ...

Staff at Windsor Castle, one of Britain's most popular tourists sites, begin voting Tuesday on whether to go on strike over low wages. It is the first time Queen Elizabeth is facing such an action by members of the royal household.

The union representing 120 employees at Windsor Castle — ...

A massive power outage hit dozens of Turkish cities and provinces Tuesday, bringing public transportation services to a halt and disrupting businesses that have no backup power.

Prime Minister Ahmet Davutoglu said officials are investigating all possible causes, including a terrorist attack, for the electricity shutoff across Turkey, according ...

For a decade, Venezuela sold oil at subsidized payment rates to 13 neighbors, including Cuba. But tumbling oil prices have hit Venezuela's economy hard, forcing it to trim those subsidies.

Saudi-led airstrikes intensified against Houthi rebels in Yemen. International aid agencies say one strike hit a camp for displaced people and refugees in the north of the country, killing at least 29 people and wounding many others.

Doctors Without Borders (MSF) says the strike hit the Al Mazraq refugee ...

With a single keystroke, the personal information of President Obama and 30 other world leaders was mistakenly released by an official with Australia's immigration office.

Passport numbers, dates of birth and other personal information of the heads of state attending a G-20 summit in Brisbane, Australia, were inadvertently emailed to ...

The current upheaval in Yemen is a sharp reminder of the fragility of the global oil market. Airstrikes by Saudi Arabia against Houthi rebels in Yemen has stoked fears of a disruption to the supply market.

Yemen and Saudi Arabia, the world's largest oil producer, share a long border. ...

Saudi Arabia unleashed another round of airstrikes today on its southern neighbor, Yemen. The warplanes targeted Houthi rebel targets, including air bases, in a bid to neutralize the militants' air defenses.

Explosions rocked the capital, Sanaa, and anti-aircraft guns could be heard returning fire, according to The Associated Press.

...

The U.S. has begun airstrikes against self-declared Islamic State militants in Tikrit, Iraq. The effort by Iranian-backed militias to help Iraq recapture the city has stalled.

This post was last updated at 6:29 p.m. ET.

The Saudi ambassador to Washington says the Saudi air operations against Shiite Houthi rebels in Yemen will continue and "we will see coalition partners join in the effort" and he accused Iran of sending advisers to aid the Houthis.

Saudi warplanes ...

Update at 2 a.m. ET Thursday: U.S. Confirms It Is Supporting Saudi Military Operations

In a statement late Wednesday night, National Security Council spokesperson Bernadette Meehan said:

"In support of [Gulf Cooperation Council] actions to defend against Houthi violence, President Obama has authorized the provision of logistical and intelligence ...

The United Nations has approved a plan to give family benefits to the spouses of same-sex employees if they are legally married.

Russia had led an effort to derail the plan, which was announced by U.N. Secretary General Ban Ki-moon in July. But the U.N. General Assembly budget committee voted ...

The U.S. is providing surveillance flights over the besieged Iraqi city of Tikrit, where militants from the self-proclaimed Islamic State remain holed up, protected by a defensive network of explosives and snipers.

NPR's Alice Fordman reports that a senior military official from the U.S.-led coalition against the militants, also known ...