Why does it say "Hashem Shalom"?
Radak: It is Shalom of the Nochrim who will come from every corner to ask their Shalom and bring to them a Minchah.
Why does it say "Hineni Noteh Eleha"?
Malbim: The Shalom, Ge'ulah and rest from the enemy will be like a river that increases by itself, and goes gently. This is the Nimshal for Shod Tanchumin (11) - they are consoled from all previous afflictions, and satiated from their hunger.
What is the comparison to "Nachal Shotef"?
Rashi: I will extend to it the honor of Nochrim.
Radak: It will not damage like a flooding river. Rather, honor and wealth will come to them quickly, like a flooding river. This is like "Kush Taritz Yadav lEi'lokim" (Tehilim 68:32).
Malbim: Just like a river floods everything that it finds in its way, so He will flood the honor and wealth of Nochrim, to bring them to Yerushalayim. This is the Nimshal of Ziz ha'Kavod (11), which they will suck just for pleasure.
What is the meaning of "[vi'Ynaktem] Al Tzad"?
Rashi: [You will nurse] on the side of your foster mothers. Radak - this is a metaphor. Just like a baby nurses without toil, so you will consume the Kavod of Goyim for which you did not toil.
Malbim: You will nurse from the Shod and Ziz by her.
What is the meaning of "Al Tzad [Tinase'u]"?
Radak: After Yisrael are compared to a baby regarding nursing, also regarding carrying - the wet-nurse carries him on her arms. Malbim - this is because he cannot go by himself. So they will bring You from Galus.
Why does it say "[v'Al Birkayim] Tesha'asha'u"?
Rashi: You will be entertained, like they entertain a child.
Radak: The wet-nurse entertains the baby on her knees - these are ways of raising children, So the Goyim will elevate you, and you will have all kinds of honor and grandeur. The verse did not mention who entertains him. This is like "v'Shi'asha Yonek" (11:8).
Malbim: Due to great love, they put him on the knees.