Three German reporters and an American journalist are suing police in the Missouri town of Ferguson over their treatment during racially charged riots last year, a press watchdog confirmed Wednesday.

Reporters Without Borders said it "fully supports" the legal action against the Ferguson Police Department by the journalists who allege battery, false arrest and unreasonable search and seizure.

U.S. President Barack Obama spoke to Nigerian President-elect Muhammadu Buhari and outgoing leader Goodluck Jonathan on Wednesday, praising both for their role in the country's first democratic transfer of power.

Obama spoke to the men separately to "commend them for their leadership during Nigeria's election," the White House said.

U.S. Secretary of State John Kerry will stay in negotiations with Iran and his counterparts until at least Thursday morning, as they seek to reach a deal on the Iranian nuclear program, Washington said on Wednesday, as Tehran urged global powers to "seize" the moment.

"We continue to make progress, but have not reached a political understanding. Therefore, Secretary Kerry will remain in Lausanne until at least Thursday morning to continue the negotiations," U.S. State Department acting spokeswoman Marie Harf said.

Pakistan faces an unenviable dilemma -- whether to join a Saudi Arabia-led coalition fighting Shiite Huthi rebels in Yemen or stay out and risk angering its old ally which provides it with huge financial support.

Pakistan, currently the Islamic world's only nuclear power, has provided military aid and expertise to the Gulf kingdom for decades and enjoyed cheap oil and massive financial help in return. 

As Congolese President Joseph Kabila appears to toy with extending his 14-year rule, U.S. President Barack Obama on Tuesday urged him to respect the Democratic Republic of Congo's constitution.

"The president emphasized the importance of timely, credible, and peaceful elections that respect the DRC's constitution," the White House said following a phone call between the two men.

The FBI on Tuesday identified the driver of a car who was killed when he refused police orders to turn back from a gate at the National Security Agency headquarters outside Washington.

Ricky Shawatza Hall, 27, was shot by police Monday at the heavily-guarded entrance to the U.S. eavesdropping agency at Fort Meade, Maryland, the FBI said in a statement.

Taiwan's largest-ever missile ship went into service Tuesday after a ceremony presided over by President Ma Ying-jeou as the island strives to modernize its military in response to a perceived threat from China.

Ma praised the corvette's "stealth and speed" at the ceremony involving hundreds of naval officers and said it "reflects the determination by the military to defend national security".

Syrian President Bashar Assad says he shares the same goals as Iran and Russia when it comes to the brutal war tearing apart his country.

Assad, speaking on PBS television in excerpts of an interview airing Monday, insisted that close allies Russia and Iran "want to have balance in the world."

Marathon talks aimed at stopping Iran from getting nuclear weapons reach the finish line Tuesday as global powers scramble to clear the final hurdles hours before a midnight deadline for a framework deal.

After 18 months of tortuous talks, foreign ministers from Iran, the U.S., China, Russia, Britain, France and Germany hope such an accord will end a standoff that has been threatening to escalate dangerously for 12 years.

U.S. Senator Marco Rubio said Monday he plans to announce next month whether he will make a 2016 bid for the White House.

"I will announce on April 13th what I'm going to do next in terms of running for president or the U.S. Senate," Rubio, a first-term Republican lawmaker from Florida, told Fox News.