The Pentagon said Friday that it may send 4000 troops to Liberia as part of a comprehensive assistance plan against the deadly Ebola outbreak but stressed that the actual number may change. Defence Secretary Chuck Hagel has approved 4000 troops for potential deployment to Liberia Pentagon Press Secretary John Kirby told a press conference. 'But I want to make one thing real clear that that's a potential deployment. That doesn't mean it is going to get to that number' Xinhua quoted Kirby as saying. The number almost 1000 above what President Barack Obama had previously committed came at a time