Memos show Clinton Turmoil Part 2

Jackson6612The article also says that Clinton at times grew frustrated and short-tempered - including on the morning after her stunning third-place finish in Iowa in January, when aides on a call were silent. Clinton's camp dismissed the story as "inside-the-Beltway gossip" and "old news." And former campaign aides sharply disputed the notion of Clinton as an indecisive leader, with one campaign veteran saying, "Nobody seems to want to remember the fact that we had so many successes and come-from-behind victories in this campaign ... and they are due in large part to Senator Clinton's leadership."

Question: What does the line including on the morning...when aides on a call were silent mean? If she finished third place, then why would the author describe it as stunning? What does call mean in when aides on a call were silent?

Question: What does the phrase inside-the-Beltway gossip mean?

Question: What does the line Nobody seems to want to remember...to Senator Clinton's leadership'' mean?