As of now, the second Republican presidential debate for all practical purposes is about who gets to hold on to the second position. Former US President Donald Trump is far ahead of his rivals and no wonder he has skipped both debates so far.But Trump was looming large over the second GOP presidential debate. It was former New Jersey governor Chris Christie who used his first answer of the debate to attack Donald Trump.Former ally Christie, who distanced himself from Trump due to the latter's denial of the...