NEW DELHI, Jan. 16 -- Former judge of the Delhi high court justice Kailash Gambhir on Tuesday wrote to the President of India terming the recent decision of the Supreme Court collegium recommending elevation of Karnataka high court Chief Justice Dinesh Maheswari and Delhi high court judge Sanjeev Khanna as judges to the Supreme Court, a "black day" for the Indian judiciary and requested the President to review the recommendations and not "let another historical blunder be committed"....