ANKARA - The West is angered about Turkey's refusal to go along with it on Iran sanctions, but unlikely to try to punish Ankara as it needs help with neighbouring Syria, say analysts.
While Washington and Brussels are ardent supporters of sanctions to force Iran to abandon its contested nuclear programme, Turkey believes tough measures will backfire and instead backs the policy of engagement and diplomacy.
Turkish officials have refused to join the latest US and EU sanctions against Iran, which include a ban on oil imports, and are only bound by UN Security Council measures.
But analysts said that while Turkey has come under pressure from Washington, it will be protected from its wrath largely because of the Syrian crisis on its doorstep.
"First of all, the Obama administration needs Turkey's help in contending with the Arab political uprisings, especially the difficult situation in Syria," said Barbara Slavin, senior fellow at the Atlantic Council of the US.
Since the outbreak of the uprisings in mid-March last year, Ankara and Washington have been co-ordinating policies on how to respond to President Bashar al-Assad's deadly crackdown on dissent which has claimed more than 7600 lives according to UN estimates.
Both have called on Assad to step down, and also worry the unrest could deepen in a region already jolted by last year's Arab Spring uprisings.
As Syria's closest ally in the region, Iran has stood behind the regime in Damascus while Turkey accused it of "mercilessly murdering" its own people.
The unrest in Syria is not the only divergence in Turkish-Iranian ties.
Ankara's decision to allow an early radar system to be stationed on its soil as part of a Nato missile defence scheme is another source of tension in the two neighbours' relationship.