In Jharkhand, Dr Singh tripped up (by design, or accident?) because that was by no means a borderline case; happily, he swiftly corrected course. On the Modi visa denial issue, however, the PM did not put a foot wrong, although there are some in his own party who believe he should have personally kept silent and allowed the foreign office to register a routine, possibly mild, protest. I am not privy to Dr Singh's mind but according to me his personal intervention was tactically brilliant and constitutionally impeccable. One can expect a person of Dr Singh's background to uphold constitutional niceties, but tactics? We were told he didn't know the word.