TEL AVIV—Formed in Might to deal with Israel’s most pressing worries, the nation’s unity government is fraying as divisions deepen involving Key Minister Benjamin Netanyahu and his rival-turned-lover, Benny Gantz.

The two leaders have sparred above the country’s reaction to a 2nd wave of coronavirus infections. Their political get-togethers have fought above judicial reform, whilst Mr. Netanyahu and his associates have attacked senior justice officials overseeing his trial for corruption prices. They disagree above Mr. Netanyahu’s…