Egypt arranged the reunification in the context of their talks with Saudi Arabia and others. Any resistance to the Palestinian state by the west will be met with a more united Muslim front. Right now it is a moderate situation, but Israel is trying to turn it into a bad situation. Israel should accept some losses quickly (i.e., remove people from contested areas) and change its stance. The alternative is serious.
Colombia recalls ambassador to Venezuela amid border crisis (Reuters)
from the article: Palestinian reconciliation could work to Israel's advantage