Labour MPs and the European Greens have demanded clarity from the Green Party over a "Zionism is racism" motion.

Vivien Lichtenstein says she believes motion is unhelpful as anger grows over Zack Polanski’s absence for vote

With a fast-expanding membership and historic electoral gains in sight, the Israel–Palestine debate is testing party unity

Motion calling for single Palestinian state, which is opposed by most Green MPs and expected to be challenged, passes by 1,022 votes to 813

The vote has caused divisions among figures at the top of the party at its conference in Brighton.

As Zionism is racism motion is debated on Sunday, party source confirms 'We have a phone number for a small number of people if they are worried, and a room if they would like to use it'

Greens leader due to be on campaign trail in London when contentious motion is debated in Brighton