Complex sentence: The shortest accession negotiation was that of the Kyrgyz Republic, while the longest was that of Russia, which, having first applied to join GATT in 1993, was approved for membership in December 2011 and became a WTO member on August 22,2012.
Split into simpler sentences: The shortest accession negotiation was that of the Kyrgyz Republic, while the longest was that of the Russia. Having first applied to join GATT in 1993, was approved for membership in December 2011 and became a WTO member on August 22,2012.