Donald Trump criticised NATO because the US carried too much of the weight for an alliance that, he said, failed to protect Europe against Russia. Rajan Menon, Professor of International Relations at the City College of New York isn't sure Trump was right about NATO, but warns "the Quad" a new alliance against China has both those basic flaws. The allies, India, Japan and Australia add little strength to the US and aren't likely to stem Chinese aggression against Taiwan.