Will a new UK left party back mass movements or bow to the establishment?

A new left-wing political party is emerging in the United Kingdom, driven by dissatisfaction with the current Labour leadership and involving figures like Jeremy Corbyn. While the project has garnered significant initial public support, it faces the challenge of defining its platform and policies. A crucial test for the new party will be establishing its international policy, particularly its stance on the war in Gaza, potential conflict with Iran, and the actions of groups like the Houthis and Hezbollah. The party's success will ultimately depend on whether it aligns with anti-war mass movements or conforms to the UK's established pro-militarism political consensus.