There is tension today between Israel and the US after the latest deal to curb Iranian nuclear ambitions.

Yesterday an agreement was reached between world powers which means Tehran will receive sanction relief for six months for halting its uranium enrichment activities.

US President Barack Obama has welcomed the move, but Israeli Prime Minister Benjamin Netanyahu has condemned it as an "historic mistake".

The deal was announced by European Union policy chief Catherine Ashton and is seen by many a first step towards resolving a decade-old stand-off between Tehran and the West.

The agreement between the Islamic state and the US, Britain, France, Germany, China and Russia was nailed down after more than four days of negotiations in Geneva.

Mr. Obama said Iran could not use its next-generation centrifuges under the deal and the limitations under the agreement "cut off Iran's most likely paths to a bomb".

He added that if Iran did not meet its commitments during a six-month period, the US would turn off sanctions relief and "ratchet up the pressure".

British Foreign Secretary William Hague said the agreement was "very important and encouraging", adding that it meant "the nuclear programme won't move forward for six months".

However, he acknowledged that "legitimate concerns" remained.

He and US Secretary of State John Kerry are holding talks in London today on the Iran deal and the latest developments in Syria.

Mr. Kerry offered assurances to Israel over the nuclear agreement, saying it would make the Jewish state safer over the next six months because the world would have "insights" into Iran's nuclear programme.

Iran's President Hassan Rouhani says it is a victory because the agreement recognises his country's right to maintain a nuclear programme.

Harlan Ullman, Senior Advisor at the Atlantic Council in Washington, spoke to Newstalk Breakfast earlier.Iran will get access to US$4.2 billion (€3.1) in foreign exchange as part of the accord, a Western diplomat said.