Renowned Nazi hunter Serge Klarsfeld has endorsed Marine Le Pen's National Rally (RN) party in a potential runoff election, stirring controversy in France.

Klarsfeld, noted for exposing Nazi criminals, supports RN due to their backing of Jews and Israel.

This endorsement has led to accusations of anti-Jewish sentiment from the Left Party and the dissolution of a left-wing alliance in the National Assembly.

The Left Party's pro-Palestinian stance has created tension within the left-wing alliance, but they still plan to contest upcoming elections together.

Progressive parties are preparing to challenge the elections with a renewed left-wing alliance despite the backlash.

President Macron's call for new elections after RN's success in the European elections emphasizes Klarsfeld's shift towards combating anti-Semitism and supporting Jewish interests.

Klarsfeld stresses the need to address antisemitism on all sides, starting with RN, and plans to vote for a centrist party in his own district.

The situation is complicated by shifting political alliances and perceptions, making it difficult to form a clear stance.