Houthi fighters entered Yemen's presidential palace after a brief clash with the compound's security guards, witnesses and security sources told Reuters, a day after some of the worst battles in the capital in years.... "This is a coup. There is no other word to describe what is happening but a coup," Saleh al-Jamalani, a Yemeni army colonel, told The Associated Press. He said that the rebels likely had the assistance of elements inside the current government, headed by president Abdu Mansour Haddi. ....Houthis have also received forms of assistance from Iran as well, turning Yemen into the latest battleground between...