A blaze has swept through a hospital in South Korea, killing 21 people and leaving six others in a critical condition, Al Jazeera's Dominic Kane reports.<br />Subscribe to our channel http://bit.ly/AJSubscribe<br />Follow us on Twitter https://twitter.com/AJEnglish<br />Find us on Facebook https://www.facebook.com/aljazeera<br />Check our website: http://www.aljazeera.com/
