(Devarim, Ibid.) "for the blood of the slain and its captivity": because of what they did with the slain of My people, as it is written (Jeremiah 8:23) "If only my head were water and my eyes a spring of tears, so that I could cry all day and night for the slain of the daughter of my people!"
"and its captivity": for what they did with the captives of My people, viz. (Isaiah 14:2) "and they will be captors of their captors."
(Devarim, Ibid.) "from the beginning of the breaches of the foe": When the Holy One Blessed be He brings punishment upon the foe, He brings it not only for what they did, but for what they and their fathers did — from (the time of) Abraham on.