These are some of the notable events relating to politics in 2013.

• January 21
  • Barack Obama begins his second term as President of the United States.
  • Attempted coup d'état in Eritrea
  • Nyamko Sabuni resigns as deputy education minister in Sweden, and is replaced with Maria Arnholm.^[1]

• January 23 – In a speech in London, British Prime Minister David Cameron outlines his intention to renegotiate the terms of the UK's membership of the European Union then offer a referendum on United Kingdom withdrawal from the European Union if a new deal is agreed.^[2]

• February 11 – Pope Benedict XVI announces his resignation as head of state of the Vatican City State, effective on the 28th.

• July 1 – Croatia becomes the 28th member of the European Union.^[3]

• November 1 – 2013 Thai protests began.

• November 11 – The 19th yearly session of the United Nations Climate Change Conference began in Warsaw, Poland, lasting until 22 November 2013.^[4]

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