Don't know why they had to pick on Prime Minister Jullia Gillard. It could have been any of the previous 5 prime ministers (or even further back, but that goes to when I was still in school).
In particular there's a mental image I've always wanted to illustrate on paper - a tiger (representation of China) with fangs drooling and advancing menacingly on a kangaroo joey who optimistically asks "Will you be my friend?"