(CNN) -- Vice President Joe Biden argued that the Ebola virus is on par with ISIS in Iraq and Syria when it comes to global security threats. Speaking in Boston Thursday at the Harvard Institute of Politics, Biden warned that "threats as diverse as terrorism and pandemic disease" are crossing borders "at blinding speeds," and they demand a global response involving more players "than ever before." "This has all led to a number of immediate crises that demand our attention from ISIL to Ebola to Ukraine -- just to name a few that are on our front door -- as...