Saudi Arabia is willingly inflaming sectarian tensions in the Middle East, says our columnist.
Saudi Arabia said it would restore ties with Iran when it stopped meddling in its affairs.
The Kingdom's envoy to the UN said Saudi Arabia will 'attend the next Syria talks'.
A Tehran lawmaker said Riyadh's action could affect Iranians' annual Hajj pilgrimage.
Saudi Arabia beheaded 158 people in 2015 and began 2016 with 47 executions.
IBTimes UK explains why tensions are rising between Middle East rivals Iran and Saudi Arabia.
Anonymous takes credit for crashing sites, while Iran claims cyberattack was response to execution of Shia cleric.
Riyadh and Tehran will continue to settle scores in brutal regional conflicts.
Saudi's Sunni allies join in expelling Iranian diplomatic staff.
The Saudi kingdom executed the Shia cleric on Sunday 2 January.
Regional powers said they are rallying behind the fight against 'terrorism'.
Criticism was not delivered by David Cameron, but by a Foreign Office minister Tobias Ellwood.
The Kingdom's foreign minister says Iran's diplomatic staff has 48 hours to leave the country.
UK prime minister has yet to comment on the execution of Sheikh Nimr al-Nimr on New Year's Day.
Tehran City Council to discuss renaming the embassy's street after 'martyred' Shia cleric
Video footage shows protesters ransacking the mission as the world condemns the Saudi Kingdom for the executions of 47 detainees.
Bahrain nationals have protested after the execution of the prominent Shia cleric in neighbouring Saudi Arabia
Saudi interior ministry confirmed al-Nimr was among 47 put to death for terror offences
On 2 January it announced 47 executions including that of Shiite cleric Sheikh Nimr al-Nimr.
The first budget under King Salman, who was crowned in January, makes a cut in Saudi Arabia's fortunes.
Baghdadi made the statement in a new audio recording which has been circulated on social media.
More than 107 people sustained injuries in the inferno at the medical facility.