1) springing back; rebounding.
2) returning to the original form or position after being bent,compressed, or
stretched.
3) recovering readily from illness, depression, adversity, or the like; buoyant.

Link to present incidents:
Barack Obama and David Cameron have vowed to use the Nato summit starting in Wales on Thursday to engineer a resilient military and political coalition, including key countries in the Middle East, capable of squeezing out and destroying Islamic State (Isis) in northern Iraq.