United States Republican presidential candidate Jeb Bush expressed support for Turkey's decision to shoot down the Russian warplane."Turkey is a NATO ally, they are an integral part if we're to be successful in the fight against [Daesh] and to change regimes, to take out [Syrian President Bashar al] Assad, it used to be our objective," Bush told CNN on Wednesday."If we are serious about that, Turkey needs to be an ally and we need to show support. I think President Obama was correct to say that every country has a right to self-defense" he added.President Barack Obama backed Turkey's downing of a Russian warplane in violation of Turkish airspace on Tuesday saying, Turkey has rights to protect its borders during a joint press conference at the White House with French President Francois Hollande. On Tuesday, two Turkish F-16 fighter jets on an aerial patrol intercepted a Russian warplane within engagement rules when it intruded into Turkish airspace near the Turkey-Syria border.The intruding aircraft was warned about the violation 10 times within five minutes before it was shot down.