For the answer the 3. At the council of Elrond, it is said that the one ring couldn't pass over the sea to valinor because they wouldn't accept it there, it belonged in middle earth. I also think that if it did indeed pass over the sea, it wouldn't have done any good because at the time Sauron's power was growing and would have continued to grow until the ring was destroyed. Of course the Valar probably could have destroyed it in Valinor but they wouldn't because they decided to leave Middle Earth to itself nd not intervene directly.
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His sword was long his lance was keen
His shining helm afar was seen
The countless stars of heavens field
Were mirrored in his silver shield
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