"We feel" followed by "We have mentioned". Well, yah. Hardly the first time Israel has said it will do something and then it does another. It simply baffles the mind how the US just sits back and takes it. What the US and Mitchell should tell Israel publically is what it apparently has been telling them behind closed doors for years: "Just go ahead and do what you have to do".
U.S., allies conduct 22 strikes against ISIS targets in Iraq, Syria (Reuters)
from the article: U.S.: Israel plan to build in East Jerusalem harms peace process