WASHINGTON — After a year increasingly dominated by bitter internal Jewish disputes over the Iran nuclear agreement, all of the major American Jewish synagogue movements will come together in common cause this weekend to observe what they describe as a “Special Sabbath of Solidarity” with Israel.

Rabbis and leaders from a number of Reform, Conservative, Orthodox and Reconstructionist movements joined with the umbrella organization Conference of Presidents of Major American Jewish Organizations to organize the event, which they hope will be observed in Jewish congregations across the country.