upon Israel's dictation. In war , people kill each other. There is no love there. Negotiate with your enemy .It is ridiculous to distinguish between an enemy A and enemy B that meets some conditions. The US was negotiating with the north Vietnamese at the height of the war for some years till the conflict ended.
U.S. warns governments, bankers Iran sanctions still in place (Reuters)
from the article: Hamas, Fatah leaders meet in Cairo for Palestinian unity talks