Verbal Ability - Question of the Day

Question-
The question below contains a paragraph followed by alternative summaries. Choose the option that best captures the essence of the paragraph.
The signing of a treaty between the US and Russia on reducing their strategic nuclear arsenals is most welcome, even if the larger aim of nuclear disarmament remains distant. Cutting their nuclear arsenals by a third over seven years - down to 1,550 warheads from the 2,200 allowed by the 1991 strategic arms reduction treaty - still leaves enough to destroy the world several times over.

OPTIONS

1) In spite of the treaty between the US and Russia to reduce their nuclear arsenals down to 1550, the larger aim of nuclear disarmament remains distant.
2) Though the new treaty between the US and Russia on reducing nuclear warheads is a positive step, the larger aim of nuclear disarmament is still distant.
3) Though the new treaty between the US and Russia will reduce their nuclear arsenals to below 1991 levels, they are still sufficient to destroy the world several times over.
4) Though the new treaty between the US and Russia will reduce their nuclear arsenals to 1550 warheads, they are still sufficient to destroy the world several times over.
5) The treaty between the US and Russia on reducing the nuclear  warheads from 2200 to 1550 over seven years leaves them still enough to destroy the world several times over.

Solution
The gist of the paragraph is not the numbers. It is the treaty that is a positive step (most welcome), but the goal of the treaty also is total nuclear disarmament- that still remains distant.
Almost all options capture the specific event and the details well, but the essence is captured by option 2 only.
The other options fail to mention the ‘most welcome’ aspect.
Hence, the correct answer is option 2.