On 9 June 1942, Lord Wedgwood opened the debate in the British House of Lords by alleging that Britain had reneged on its commitments and urging that the League of Nations mandate over Palestine be transferred to the USA. He stated with bitterness: "I hope yet to live to see those who sent the Struma cargo back to the Nazis hung as high as Haman cheek by jowl with their prototype and Führer, Adolf Hitler". (Source)
How does yet change the meaning of this sentence? I don't perceive any difference if it be omitted?
Which definition does it match? Here, yet modifies 'hope' so it functions as an adverb. Yet, definitions 1, 2, 3 all look correct to me.