United Kingdom set to re-open Iran embassy

Foreign Secretary William Hague will announce a plan on Tuesday which will lead to the re-opening of the British embassy in Iran's capital, Tehran. Full diplomatic relations with Iran were suspended after attacks on the British embassy in Iran in 2011. The election of a new Iranian president and agreement on how to deal with Iran's nuclear programme has warmed diplomatic relations.
Background:
U.K. is set to re-open Iran embassy [BBC]
U.K.'s Hague discussed Iraq with Iranian counterpart [WSJ]