1.The U.S. decided to withdraw from the nuclear treaty because the treaty required its members not__________________.
2.When will the U.S. withdraw from the nuclear treaty?
3.According to Russia, US' withdrawal from the treaty may bring about__________________.
4.What is Russia's attitude towards U.S. withdrawal from the 1972 ABM Treaty?
5.Russian and the U.S. still couldn't reach agreement on_________________.