I assume that S's 2
♦ was natural: it would not be for me, but the posts all seem to assume that is was, and S's hand and bidding suggests it was.
This is important, because, if 2
♦ was natural, then the lead is clearly shortness, and East should be signalling his entry, not giving useless count or
♦ attitude.
So the
♦2 at trick 1 was the 'correct' card but maybe E was, as one poster suggested, giving count
As for the rest of the defence, I agree with Justin. East never put his brain into gear: the failure to win the
♣K was an enormous error, reflecting an absence of any effort on his part.
While many here seem to blame West, I strongly disagree. I am all in favour of making partner's life easy, but I would lead a
♣ other than the Jack only if I heard my partner snoring or saw his eyelids drooping. On one level, a count card is better than the J, but I do not like count leads after trick one so almost never make them. Furthermore, any East sufficiently absent from the table as to get this wrong might, as another poster mentioned, attempt to 'cash' the second
♣
If your partnership style is to make count leads in mid-defence, then West gets a small share of the blame: maybe 15%.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari