so a unity government is of no use at this time unless Hamas and other factions accept the Quartet's conditions. There's just no way around this basic requirement. The bottom line is that there can't be a Palestinian state based more or less on the 1967 cease-fire lines, without accepting the State of Israel as its neighbour. Once again, this was the prerequisite since 1947 and 1967 after the wars.
U.S. warns governments, bankers Iran sanctions still in place (Reuters)
from the article: Hamas: Palestinians won't form interim government before elections