<sod >While Mrs May has described the deal as 'vital' for the security of the region, Mr Netanyahu has long made clear he regards it as a bad deal which will do nothing to halt Tehran's nuclear ambitions. The Israeli prime minister now has the enthusiastic backing of US President Donald Trump, who has already imposed a series of new sanctions, declaring that he was putting Iran 'on notice' after last week's missile test. Before leaving Jerusalem on Sunday, Mr Netanyahu said he would be seeking Mrs May's support for a wider diplomatic front against Tehran. 'In the diplomatic sphere, I intend to emphasise the need for a common front against Iran's defiant aggression which has raised its head in recent days,' he told reporters.< eod>< sod > While Mrs May has described the deal as 'vital' for the security of the region, Mr Netanyahu has long made clear he regards it as a bad deal which will do nothing to halt Tehran's nuclear ambitions. The Israeli prime minister now has the enthusiastic backing of US President Donald Trump, who has already imposed a series of new sanctions, declaring that he was putting Iran 'on notice' after last week's missile test.  Today Mrs May reiterated to Mr Netanyahu that the Iran deal is 'vital' and said it must be 'properly enforced and policed' but recognised his concerns over Iran's 'patter of destabilising activity in the region'.  A Downing Street spokesperson said the pair also talked about the Middle East Peace Process and the UK's 'firm commitment to a two-state solution' in the region.< eod>