U.N. officials have condemned the killing of a legal advisor to Myanmar's ruling party and called for a "proper, effective impartial" probe into murder. Ko Ni, a prominent member of Myanmar's Muslim minority, was gunned down Sunday as he was waiting for a taxi outside Yangon's international airport. He had just returned to Myanmar after an overseas trip. A taxi driver was wounded in the attack. Officials say the gunman has been arrested. “I am shocked to the core by the senseless...