Given the Target and Argument texts detect the stance that the argument has towards the topic. There are three types of stances "in favor", "against", and "neutral". 

Topic: Israeli military assault in Gaza
 Argument: Israeli attacks may force Hamas to accept a more durable ceasefire.
in favor

Topic: Needle exchanges
 Argument: Needle exchanges protect public, not just drug addicts.
in favor

Topic: No-fly zone over Libya
 Argument: Past No-fly zones have led to further military intervention.

against