Former South African president Nelson Mandela remained in a critical but stable condition and was responding to treatment, President Jacob Zuma said on Thursday after visiting the anti-apartheid hero in a Pretoria hospital. Mandela, whose 95th birthday is on July 18, has been receiving treatment for a recurring lung infection that has led to four hospital stays in the past six months. http://english.ahram.org.eg/News/76255.aspx