Key points:- The Australian government terminated Russia's lease on a site for its new embassy- The lease requires that the embassy be built within three years, but 11 years has already passed- The National Capital Authority says the site is prime land that is too important to be left derelictIn 2011, the Russian government was granted approval to build an embassy to replace its ageing facility in the ACT suburb of Griffith.When the discussion turned to how long the parties needed to deliver documents to the court, Mr Hyde said the matter must be dealt with quickly because a key witness, Russian ambassador Alexey Pavlovsky, may soon be expelled from Australia.Foreign Minister Penny Wong said last month Australia was considering expelling Mr Pavlovsky over Russia's nuclear threats against Ukraine, which it invaded in February and continues to occupy.NCA chief executive Sally Barnes said in her lease decision that Russia had taken too long to fulfil its agreement on what was prime land."With limited blocks currently available for diplomatic purposes, unless a country can demonstrate a willingness and ability to develop the site, the NCA supports a policy of "use it or lose it".""