Simon Marks

Republican presidential candidates in the US will go head to head in the final debate of the year in just a few hours. Audio

The US Army has ordered the court-martial of a soldier, who walked away from his post in Afghanistan and became a Taliban prisoner for five years. Audio

The gloves are off in the increasingly bitter race for the Republican presidential nomination, amid acrimonious name-calling. Audio

The Republican presidential hopeful, Ted Cruz, is leading Donald Trump in the crucial primary state of Iowa. Audio

Donald Trump is hinting that he might abandon America's Republican Party and seek the US presidency as an independent candidate. Audio

Republican candidates for the US Presidency are hitting back at Donald Trump after he called for America's borders to be closed to all Muslims. Audio

The billionaire businessman Donald Trump has sparked controversy after calling for a ban on Muslims entering America. Audio

Our Washington correspondent Simon Marks. Audio

President Barack Obama is promising the United States will destroy Islamic State in what he describes as a strong, smart and relentless campaign. Audio

President Obama is vowing to use 'every single aspect of American power' to destroy Islamic State. Audio

FBI agents in California have raided a house linked to one of the attackers who killed 14 people in San Bernardino last week. Audio

Two suspects believed responsible for a shooting spree at a social services center in California, that's left 14 people dead, have themselves been killed by police. Audio

News is coming in from the United States of a shooting rampage in San Bernadino. With the latest our US correspondent Simon Marks Audio

Colorado's state governor is calling for calm on both sides of the US abortion debate, following the fatal shooting of three people at a family planning clinic. Audio

The American military has admitted taking nearly 20 minutes to call off a mistaken air strike on a hospital in Afghanistan last month that killed 30 people. Audio

NATO's secretary general has called for calm and de-escalation after Turkish jet fighters shot down a Russian military jet yesterday. Turkey and its NATO allies say the Sukhoi 24 bomber trespassed on… Audio

Now to Washington where Barack Obama has welcomed the French president Francois Hollande to Washington DC with a promise the United States will stand united with France to defeat terrorism. Audio

The US State Department has issued a rare worldwide travel alert warning Americans of the risks of travelling because of what it describes as increased terrorist threats from militant groups. Audio

France's President Francois Hollande is expected to seek a bigger United States effort against Islamic State, when he visits Washington this week. Audio

The Paris terror attacks are forcing US presidential candidates to focus on national security, and fast. Audio