Nick Harper

To the US elections now, and voters in New York are casting their ballots in the state's high-stakes primary. Audio

Helen Clark's rivals for the United Nations Secretary-General role have begun their first public pitches for the job. Audio

The battle for the Democratic presidential nomination is getting increasingly fractious. Vermont Senator Bernie Sanders won Wyoming yesterday, his seventh victory in the last eight match ups. The… Audio

There are reports this morning that Helen Clark will announce today she will seek the United Nations' top job. Audio

And our UN correspondent in New York, Nick Harper has the latest. Audio

American officials say the couple who killed 14 people in San Bernardino last week were radicalised before they met online. Audio

Pfizer, the drug company which makes Viagra is proposing a merger with Allergan, the maker of the botox cosmetic treatment to create the world's largest pharmaceuticals business. Audio

New data out this week is likely to show the United States economy is growing at a faster pace. Audio

To the United States, where Democratic presidential candidate Hillary Clinton is urging a tougher approach to fighting Islamic State militants. Audio

The American President Barack Obama has phoned the aid agency Médecins Sans Frontières to apologize for the accidental killing of 22 people in a US airstrike in Afghanistan. Audio

Stock markets in New York and Europe have rebounded despite China's index continuing to fall yesterday. Audio

Billions of dollars have been wiped off the value of shares today across the world's stock markets. Audio

Donald Trump has drawn boos at a testy first Republican presidential debate in Cleveland this afternoon. Audio

The world's greatest game has been rocked by multi-million dollar corruption and bribery charges laid by US authorities and another separate investigation by Swiss officials. Audio

A monster blizzard which is beginning to batter the United States is expected to cause major disruptions. Audio

The radical muslim cleric Abu Hamza who masterminded the kidnapping of a New Zealander and 15 other tourists in Yemen in 1998 has been sentenced to life in prison. Audio

The radical preacher Abu Hamza al-Masri is due to be sentenced in New York for terrorism charges, marking the end of a decade-long legal battle. Audio

The Boston bombing suspect, Dzhokhar Tsarnaev, has appeared in court after spending almost a year and a half in solitary confinement. Audio

As you heard from Natalie there, the arrest of Phil Rudd has been making headlines around the world. Audio

More than 13 years after the twin towers were destroyed in the September 11 attacks, New York's World Trade Center has re-opened for business. Audio