question about timeline of events..

question about the timeline that doesnt make sense to me. all that schumer learned from clemente was that ibbc was arranging an arms deal, it was unspecified whom with. well before they meet with calvini, salinger tells that french interpol guy walking his dog that naomi watts character found out that clemente was negotiating a deal with calvini, but that calvini backed out for some reason. when did naomi watts find out that he backed out, and how did she ever find that out?

on an unrelated note, it seems that its not ok for the bank to purchase these missile guidance systems, but its ok for calvini, a person running for PM in italy to sell them to a bank? cause he seemingly didn't mind talking to watts and salinger about it