Sadat had been proclaiming his desire to get back the Sinai for a while, and had been trying to achieve this through diplomatic means. Golda Meir refused. If Israel had cut a Camp David style deal back then, there would have been no 1973 war. Instead, there was a war, Israel got roughed up, and Sadat got the Sinai back anyway, 6 years later.
Russia is not and will not launch infantry operations in Syria, says senior lawmaker (Reuters)
from the article: Netanyahu's conspiracy to drag the U.S. to war