The highest-level talks between Russian and Ukrainian foreign ministers in Turkey ended without a breakthrough. On the ground, the city of Mariupol remains surrounded by Russian forces. For more than 400,000 people trapped without water, food and electricity, there is no way out. Al Jazeera's @Natacha Butler has more from western Ukraine. Warning: The report contains distressing images. Subscribe to our channel: http://aje.io/AJSubscribe Follow us on Twitter: / ajenglish Find us on Facebook: / aljazeera Check our website: https://www.aljazeera.com/ #AlJazeeraEnglish #Ukraine #Russia #Mariupol