UNITED NATIONS (Reuters) - U.N. Secretary-General Antonio Guterres on Sunday urged warring parties in Yemen to stop all ground and air assaults and called for a resumption of all commercial imports into the country because  millions of children, women and men risk mass hunger, disease and death.  A Saudi-led coalition launched air strikes on Yemen s capital, Sanaa, local media said, lending support to former Yemeni president Ali Abdullah Saleh after he signaled he was abandoning his support of the Iran-aligned Houthis - a shift that could pave the way to end three years of war. 
U.N. chief urges end to air, ground assaults in Yemen