Please answer the following question: Facts:   - president: mehmet ali talat rauf denktaş rauf denktaş    - successor: mustafa talat hakkı atun akıncı hüseyin Özgürgün -lrb- acting -rrb- mehmet ali    - party: national unity party    - spouse: meral eroğlu    - primeminister: hüseyin Özkan yorgancıoğlu Özgürgün -lrb- acting -rrb- İrsen küçük sibel siber    - office: president of northern cyprus prime minister of northern cyprus    - predecessor: mehmet Çağatay ali talat ferdi sabit soyer hakkı atun mustafa      - term end: 30 1 january 1994 april 2015 23 april 2010 13 january 2004    - term start: 23 19 july 1985 april 2010 5 may 2009 16 august 1996    - birth date: 1938    - name: derviş eroğlu    - image: derviş eroğlu.jpg    - birth place: famagusta , cyprus    - alma mater: istanbul university   Based on these bullet points, write a short biography describing the life of derviş eroğlu .
Answer:
derviş eroğlu -lrb- born 1938 -rrb- is a turkish cypriot politician , who served as the third president of northern cyprus .previously , he was prime minister -lrb- 1985 -- 94 , 1996 -- 2004 and again 2009 -- 10 -rrb- and twice-leader of the national unity party .he became president on 23 april 2010 , serving until 30 april 2015 .