it will also affect international and regional issues. it could put in doubt chinese cooperation on iran, weapons proliferation and climate change. china already suspended military exchanges with the u.s. because of the proposed arms sale to taiwan. the exchanges are useful in the past building trust between the militaries. taiwan has bought arms from the u.s. to stop china having a military advantage. they're bound by law to ensure the island can defend itself from any threat to china and congress is likely to support the arms sales. china in the past warned it would envade taiwan if it sought independence. the obama administration has, though, looked at china's policy and it hasn't introduced f-16 planes to taiwan and is not giving designs to diesel submarines. back to you.