In face of such threats and challenges, no country can manage alone or stand aloof.面对威胁和挑战，任何国家都难以独善其身或置身事外。When faced with a threat, our common responses are to fight, or take flight.我们在面对威胁时，一般反应是抵抗或者逃走。Rebel sources have so far reacted cautiously to the threat.到目前为止，反叛分子面对威胁的反应非常谨慎。