1)
What is the meaning of "Ki Chalak"?
1.
Malbim: He needed to break up Beis Hashem to remove the gold plating from it and from Beis ha'Melech to give it to Melech Ashur.
2)
Here it says that Melech Ashur did not help Achaz. In Melachim II, 16:9 it says that that Melech Ashur heeded Achaz, and killed Retzin!
1.
'Rashi': He did not help him so much. He should have strengthened him and helped him to get back the cities that Pelishtim took.
2.
Malbim: He did not help him against the new enemies.
