Hardoi, Oct 20 (ANI): Pakistan Prime Minister Nawaz Sharif has sought US intervention in resolving the Kashmir issue. Reacting sharply on the demand, the Samajwadi Party on Sunday said that it won't tolerate any interference by the United States in the matter. SP leader Naresh Agarwal said that if, in case, Prime Minister Manmohan Singh agrees to this demand, they will thoroughly oppose it. Sharif is on a three-day official visit to Washington where he will meet US President Barack Obama.