Complex sentence: On 15 February 2017, five Turkish commandos have illegally entered Greece through the Evros river and on 20 February 2017, two of them surrendered to the police and requested political asylum.
Split into simpler sentences: On 15 February 2017, five Turkish commandos have illegally entered Greece through the Evros river. The two of them surrendered to the police and on 20 February 2017, requested political asylum.