The Obama administration is preparing a new arms package for Taiwan. Ironically, selling weapons to Taipei may be the best way for Washington to get out from the middle of one of the world's potentially most volatile relationships, between China and Taiwan. Relations between China and Taiwan are improving. Yet the former continues to point more than 1,300 missiles at the latter. The threat of military force remains a backdrop to expanding economic and tourist contacts across the Taiwan Strait.

The U.S. is positioned uneasily in between. Formally committed to the principle of one China and providing weapons to Taiwan for its defense, Washington cannot easily square the circle. As China grows in economic strength and international influence, pressure will grow on America's relationship with Taipei. Taiwan's precarious situation was demonstrated by the transformation of Bush administration policy.

By the end of his term President George W. Bush was holding back arms from Taiwan and limiting transit by Taiwan's president across American territory — as had Bill Clinton. The election of Ma Ying-jeou as Taiwan's president in March 2008 was greeted with relief in Beijing and Washington. Ma has downplayed Taiwan's quest for a separate international identity and promoted ties with China.