Q. Consider the following statements: 1. New START Treaty is the successor treaty of START II 2. New START requires both sides (US and Russia) to reduce their arsenal of warheads by roughly one-third of current levels Which among the above statements is / are correct?
Answer: Only 2
Notes:

1. New START Treaty is the successor treaty of START II: This statement is not correct. The New START Treaty is actually the successor treaty to the original START (Strategic Arms Reduction Treaty) between the United States and Russia. The START II treaty was a separate agreement that was never ratified and did not enter into force. It aimed to further reduce the number of strategic nuclear weapons between the two countries, but it was not successfully implemented.
2. New START requires both sides (US and Russia) to reduce their arsenal of warheads by roughly one-third of current levels: This statement is correct. The New START Treaty, officially known as the "Treaty between the United States of America and the Russian Federation on Measures for the Further Reduction and Limitation of Strategic Offensive Arms," was signed in 2010. It mandates both the United States and Russia to reduce their deployed strategic nuclear warheads to no more than 1,550 warheads and their deployed strategic delivery systems to no more than 700. This represents a reduction of about one-third from the levels allowed under the original START treaty.

Thus, statement 2 is correct, but statement 1 is not correct. The New START Treaty is not the successor to START II; it is the successor to the original START treaty.

2