." >> sudan, syria, afghanistan, and pakistan also rank among the most dangerous countries for aid workers. attacks have quadrupled in recent years. workers have long been regarded as neutral, but that often has not protected them or made their work easier. >> the increasing intensity and radicalization of the armed conflict is making it more and more difficult for us to give humanitarian aid when and where it is needed. >> with no end to the conflict inside, aid agencies are struggling to find a solution to the crisis. >> three people sick with ebola in liberia seem to be improving after being given an experimental drug. medical workers were given the last doses of the drug which has not been clinically tested on humans. it will take months before more can be manufactured. the ebola epidemic has killed more than 1200 people in west africa. the world health organization says there's no proven treatment for the deadly virus. quarantine measures are limiting access to basic necessities. russia has banned western food imports in response to sanctions over ukraine, and it is hitting europe's f

the pakistan now. antigovernment protesters have agreed to meet with ministers after days of the medical turmoil. thousands have been demonstrating outside the national parliament in islam about -- islamabad. they want prime minister nawaz sharif to step down over allegations of corruption. the demonstrations have been largely peaceful so far. u.s. attorney general eric holder is expected to visit the st. louis suburb of ferguson in missouri. following an 11th night of unrest after the shooting of a black teenager. police in riot gear arrested another 47 people after protesters hurled bottles at officers. otherwise, the night was comparatively calm. the lease in st. louis earlier shot down another black man who was reportedly wielding a knife. stay with us. we will be back in just a minute. >> welcome back. palestinians fired dozens of rockets into israel today, and the israeli military responded with airstrikes. both sides blame each other for the renewed escalation in violence, on tuesday just before