More than £3bn is due to be spent on the proposed road tunnel between Kent and Essex, which is estimated to have higher costs per mile than HS2

Ministers have earmarked more than £170m extra to help build the Lower Thames Crossing road tunnel, fuelling concerns over the “spiralling” costs of one of the UK’s largest planned infrastructure projects.

The proposed £11bn route under the Thames between Kent and Essex is already estimated to cost more each mile than the HS2 high-speed rail link from London to Birmingham. It was given the funding boost as part of a plan to spend £3.1bn of public money on the project, before a hoped-for injection of £7.5bn by a private sector firm.

Draft treaty claims sexual and reproductive health and rights are an existential threat to the African family

An African treaty that rejects longstanding international human rights obligations moved a step closer to becoming policy this week as governments across the continent met in Ghana.

The draft African charter on family, sovereignty and values, seen by the Guardian, asserts that African values and culture are under attack from “foreign ideologies” and urges states to withdraw from any agreements that do not align with the principles of the charter, including the 2003 Maputo protocol, which promotes gender equality and protects the reproductive and health rights of women and girls.