CMS has closed its Iran office just over two years after becoming the first international law firm to move into the country.

The firm opened in Tehran in February 2016, weeks after sanctions on the country were lifted in the wake of the landmark international agreement to limit its nuclear activities.

However, President Donald Trump pulled the US out of the deal in May last year, reimposing the previous sanctions, with CMS opting to close its base in the Navak Tower as a result.